Cost Keeping for Small Metal Mines

Sizes

Square
75 X 75
Thumbnail
55 X 90
Small
300 X 486
Medium
700 X 1134
Large
930 X 1507
Extra Large
1500 X 2431

Pickering, J. C. Cost Keeping for Small Metal Mines. [Washington D.C.]. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc66479/. Accessed September 19, 2014.