Balto. and Poto. R.R., profile of tracks in Washington.

Typewritten on label affixed to verso: Profile of Sixth St., M'd & V'a Ave's, from the tunnel to the Potomac, showing effects of sinking tracks, &c. 1890.
Blueprint annotated in yellow, red, and lead pencils.
Profile drawn in 3 segments.
Sectioned and mounted on cloth backing to fold to 22 x 14 cm.
Includes drawing of "P.R.R. standard 60000 lb. freight car on standard roadbed."
Available also through the Library of Congress Web site as a raster image.
DCP