Relief shown by hachures. "Entered according to Act of Congress in the year 1865 by Egbert L. Viele in the Clerk's Office of the District Court of the United States for the Southern District of New York." Avail More
Chemical Warfare Service - Plants - Edgewood Arsenal Public domain photograph of architecture design drawing, building plan, diagram, free to use, no copyright restrictions image - Picryl description Public d More