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Author
- Keith, Arthur3
- Clapp, Frederick G. (Frederick Gardner), 1879-19442
- Branner, John Casper, 1850-1922, cartographer1
- Cairnes, D. D. (DeLorme Donaldson), 1879-19171
- Darton, Nelson Horatio, 1865-19481
- Faribault, E. R. (Eugène Rodolphe), 1860-1
- Geological Survey of Canada1
- Grant, U. S. (Ulysses Sherman), 1867-19321
- Maryland Geological Survey1
- Miller, Willet G. (Willet Green), 1866-1925, cartographer1
- Purdue, A. H. (Albert Homer), 1861-19171
- Smith, George Otis, 1871-19441
- Wilson, Morley E.1
- Young, G. A. (George Albert), 1878-1
