W. & F. Langenheim
1850, June/July
The Smithsonian "Castle"

Lantern slide photograph on glass in wood mount
Smithsonian Castle Collection
Gift of Tom Rall, Arlington, Virginia.
 
Alex di Giovanni, 10 August 2015, "Deconstructing a Mystery: Rare photo proves to be the earliest ever taken of the Smithsonian Castle", The Bigger Picture, Smithson Institution Archives
(Accessed: 10 August 2015)
siarchives.si.edu/blog/deconstructing-mystery-rare-photo-proves-be-earliest-ever-taken-smithsonian-castle
 
LL/60638