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Author/Creator
- Geological Survey (U.S.)17
- Butts, Charles, 1863-19464
- Clapp, Frederick G. (Frederick Gardner), 1879-19443
- Alden, William C. (William Clinton), b. 18712
- Bascom, F. (Florence), 1862-19452
- Campbell, Marius R. (Marius Robinson), 1858-19402
- Fuller, Myron L.2
- Richardson, G. B. (George Burr), 1872-19492
- Stone, Ralph W. (Ralph Walter), 1876-19642
- Stose, George Willis, 1869-19602
- Campbell, Marius Robinson, 1858-19401
- Martin, G. C. (George Curtis), 1875-19431
- Phalen, W. C. (William Clifton), 1877-19491