Plan of approaches to the Vicksburg Mine

Shows Brig. Genl. Hickenlooper's design for the trenches approaching Vicksburg, Miss., for the placement of the explosives detonated on 25 June.
Color coding indicates the location of Union mine shafts near Vicksburg, Miss.
NOTE: Researchers will be served a color photocopy of this diary image.
Relief shown by hachures.
This item is from the collections of the Virginia Historical Society; please contact the institution for more information.
Available also through the Library of Congress web site as a raster image.
In the Robert Knox Sneden Diary (Mss5:1 Sn237:1 v. 4, p. 470).
Manuscripts