Link to the Image Source
Library of Congress Prints and Photographs Division

Artwork Details 

Title: R.R. bridge over Cedar Run in Warrenton Junction
Dated: between 1860 and 1865
Medium: Tan paper : pencil and Chinese white
Dimensions: 7.8 x 10.6 cm.
Location: Library of Congress Prints and Photographs Division
City, State: Washington, D.C.