Great Britain. North American Boundary Commission (creator)
1861
Zenith telescope and observatory tent, Yahk River station. Captain Darrah and assistant (i.e. Capt. Haig.)
[Northwest Boundary Survey / British North American Boundary Commission]

Albumen print
26 x 35 cm (mount)
 
Bancroft Library, University of California Berkeley
Local Call Number: BANC PIC 1963.040:19--AX, Persistent link
 
Title from caption on Royal Engineers' copy, as reproduced by John Falconer in Photograph and the Royal Engineers (The Photographic Collection 2:3, p. 43) Identified by note on Library of Congress copy: Captain Charles J. Darrah, R.E., seated in tent, and Captain Robert W. Haig, R.A. of the British North American Boundary Commission posed at an astronomical observation tent with theodolite, during the marking of the boundary line between Canada and the United States. Box at right marked "Capt. Darrah, R.E., No. 2"
 
Another copy is held by the Library of Congress:
Observatory tent, N. A. [i.e., North American] Boundary Commission
Reproduction Number: LC-DIG-ppmsca-03143 (digital file from original) LC-USZC4-11238 (color film copy transparency) LC-USZC4-11438 (color film copy transparency of another copy)
Call Number: Unprocessed in PR 13 CN 1999:001, no. 5 [P&P] Unprocessed in PR 13 CN 1999:001, Another copy, no. 1, leaf 38.
 
LL/61601