Stinson, J. B. cartographic Maps. lcgft https://id.loc.gov/authorities/genreForms/gf2011026387 [S.l.], c1908. eng "The above map is made to conform to a diagram of the position of the opposing armies during the seige of Petersburg, Virginia, as gotten up by N. Michler, Major of Engineers of the U.S. Army. The position of Elliotts' and Gracies' brigades are mainly represented." Map of the Richmond-Petersburg area showing forts, covered ways, "abattis," "che-val-de-frise," railroads, drainage, and roads. Inset: Diagram of the "Crater" tunnel. 5 x 15 cm. Description of the siege appears beneath the map. Description derived from published bibliography. Scale not given. LC Civil War Maps (2nd ed.), Petersburg (Va.)--History--Siege, 1864-1865--Maps. United States Petersburg. Available also through the Library of Congress web site as raster image. http://hdl.loc.gov/loc.gmd/g3884p.cw0611000