15 books
Bibliography of North American Geology for 1914: With Subject Index (Classic Reprint)
Geological Section, St. Louis to Shawneetown (Classic Reprint)
Bibliography of North American Geology for 1909: With Subject Index (Classic Reprint)
The Upper Ordovician Rocks of Kentucky and Their Bryozoa - Scholar's Choice Edition
A Synopsis of American Fossil Bryozoa, Including Bibliography and Synonymy - Primary Source Edition
Bibliography of North American Geology for 1912; With Subject Index
Bibliography of North American Geology for 1918, with Subject Index
Bibliography of North American Geology for 1909 with Subject Index Volume 444
Bibliography of North American Geology for 1914, With Subject Index
The Upper Ordovician Rocks of Kentucky and Their Bryozoa (Volume 5)
Bibliography of North American Geology for 1912
Bibliography of North American Geology for 1910
A Synopsis of American Fossil Bryozoa, Including Bibliography and Synonymy
Bibliography of North American Geology for 1909 with Subject Index
The Upper Ordovician Rocks of Kentucky and Their Bryozoa