John Plumbe Jr.
1846 (ca)
[United States Patent Office, Washington, D.C., showing F Street facade, possibly taken from the upper floor of the General Post Office]

Daguerreotype, 1/2 plate
Library of Congress, Prints and Photographs Division
Purchase; 1972; (DLC/PP-1972:R01.1) CALL NUMBER: DAG no. 1229
 
LL/42148