"Oregon, Washington, Idaho, Montana and British Columbia"
Published by Colton & Co., 1868
This superior reproduction of the classic map of "Oregon, Washington, Idaho, Montana and British Columbia", identifiable by its strapwork border, was originally published by G.W. and C.B. Colton & Co. of New York in 1868.
Colton, who published his first atlas in 1855, was an immediate commercial success, and his maps, although once easy to obtain, have become increasingly scarce and inevitably more expensive.