David Rumsey
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Facsimile: Portland Canal - Admiralty Survey.
0009.024
pilot3
(Facsimile) No. X. N.W. America. British Columbia. Portland Canal from the Admiralty Survey of 1868. (reduced from original scale). Photo. Lith. by A. Hoen & Co. Baltimore, MD.
1868
1904
British Admiralty
(U.S.) Government Printing Office
71 × 32 cm
1 : 206000