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Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Albatross Cottages, 3353, 3367, 3407 & 3415 Albatross Street, San Diego, San Diego County, CA

Albatross Cottages, 3353, 3367, 3407 & 3415 Albatross Street, San Dieg...

Significance: These four cottages on Albatross Street provide excellent examples of the work of architect Irving John Gill. It appears that instead of being a project which developed over a long period, as was... More

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

A close up of a gold colored nut on a white surface. Sanitary engineering technique water pipes.

A close up of a gold colored nut on a white surface. Sanitary engineer...

A close up of a brass nut. A brass nut with a brass cap. Public domain stock photo.

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a waterfall, water stream, cascade, nature site, free to use, no copyright restrictions.

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a waterfall, water stream, cascade, nature site, free to use, no copyright restrictions.

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

A couple of brass fittings sitting on top of a white surface. Sanitary engineering technique water pipes.

A couple of brass fittings sitting on top of a white surface. Sanitary...

A close up of three brass fittings. A set of brass nut and nuts. Public domain stock photo.

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a park, trees, outdoors, free to use, no copyright restrictions.

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

McClure Avenue Outfall, McClure Avenue at Monongahela River, Dravosburg, Allegheny County, PA

McClure Avenue Outfall, McClure Avenue at Monongahela River, Dravosbur...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAE... More

A couple of brass nuts sitting on top of a white surface. Sanitary engineering technique water pipes.

A couple of brass nuts sitting on top of a white surface. Sanitary eng...

The brass fittings are made of brass. A pair of brass nut and a nut. Public domain stock photo.

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Albatross Cottages, 3353, 3367, 3407 & 3415 Albatross Street, San Diego, San Diego County, CA

Albatross Cottages, 3353, 3367, 3407 & 3415 Albatross Street, San Dieg...

Significance: These four cottages on Albatross Street provide excellent examples of the work of architect Irving John Gill. It appears that instead of being a project which developed over a long period, as was... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of an industrial building, warehouse, depot, train station, 19th-20th century, free to use, no copyright restrictions.

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of building construction site, free to use, no copyright restrictions image - Picryl description

Albatross Cottages, 3353, 3367, 3407 & 3415 Albatross Street, San Diego, San Diego County, CA

Albatross Cottages, 3353, 3367, 3407 & 3415 Albatross Street, San Dieg...

Significance: These four cottages on Albatross Street provide excellent examples of the work of architect Irving John Gill. It appears that instead of being a project which developed over a long period, as was... More

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a basement, underground, lobby, free to use, no copyright restrictions.

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of attic, house frame, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a park, trees, outdoors, free to use, no copyright restrictions.

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Plum Street Regulator, Plum Street at Monongahela River, Elizabeth, Allegheny County, PA

Plum Street Regulator, Plum Street at Monongahela River, Elizabeth, Al...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAE... More

Bayard Street Outfall, Bayard Street at Monongahela River, Elizabeth, Allegheny County, PA

Bayard Street Outfall, Bayard Street at Monongahela River, Elizabeth, ...

Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Ninth Avenue Regulator, Ninth Avenue at Youghiogheny River, McKeesport, Allegheny County, PA

Ninth Avenue Regulator, Ninth Avenue at Youghiogheny River, McKeesport...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAE... More

Ninth Avenue Regulator, Ninth Avenue at Youghiogheny River, McKeesport, Allegheny County, PA

Ninth Avenue Regulator, Ninth Avenue at Youghiogheny River, McKeesport...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAE... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Twenty-Eighth Street Outfall, Twenty-eighth Street at Youghiogheny River, McKeesport, Allegheny County, PA

Twenty-Eighth Street Outfall, Twenty-eighth Street at Youghiogheny Riv...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAE... More

Curry Hollow Outfall, Curry Hollow Road at Monongahela River, West Mifflin, Allegheny County, PA

Curry Hollow Outfall, Curry Hollow Road at Monongahela River, West Mif...

Picryl description: Public domain image of a park, trees, outdoors, free to use, no copyright restrictions.

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a tower, column, chimney, free to use, no copyright restrictions.

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Medical Service Corps Anniversary Poster

Medical Service Corps Anniversary Poster

The U.S. Army Medical Service Corps was formally established in 1947, however corps officers celebrate the anniversary of their corps on June 30, 1917. The Medical Service Corps began during the American Revolu... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More

Walnut Street Outfall, Walnut Street at Monongahela River, McKeesport, Allegheny County, PA

Walnut Street Outfall, Walnut Street at Monongahela River, McKeesport,...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAE... More

Ninth Avenue Regulator, Ninth Avenue at Youghiogheny River, McKeesport, Allegheny County, PA

Ninth Avenue Regulator, Ninth Avenue at Youghiogheny River, McKeesport...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAE... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia County, PA

Fairmount Park, Along Schuylkill River, Philadelphia, Philadelphia Cou...

Significance: Officially founded in 1855 but with roots extending back to 1812, Fairmount Park represents one of the earliest efforts in the American park movement. While originally intended to protect Philadel... More

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, Denver County, CO

Thirty-first Street Overflow Structure, Thirty-first Street, Denver, D...

Significance: This overflow structure comprised an important part of the sanitary engineering system built in Denver during the last part of the 19th century. Survey number: HAER CO-18 Building/structure date... More