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O.W. Gray & Son
G4220 1886 .G7
Idaho, Montana, Wyoming
1:3,168,000. 50 statute miles = 1 in
Originals were scanned in color at 400 dpi on a Colortrac 5480e large format scanner and saved as TIFF files. JPEG derivatives were made from the original TIFFS using Photoshop.
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