by Charles Rollin Keyes

1913

by Charles L. Henning

1911

by Charles Doolittle Walcott, Geological Society of Washington

1895

by Charles Clifford Huntington

1929

by Joseph Charles Arthur, Marshman Wadsworth (Edward), Minnesota Geological Survey, Newton Horace Winchell, Oscar Wilhelm Oestlund

1889

by London Library, Charles Theodore Hagberg Wright, Christopher James Purnell

1914

by London Library, Sir Charles Theodore Hagberg Wright, Christopher James Purnell

1920

by London Library, Charles Theodore Hagberg Wright, C. J. Purnell

1920

by New Jersey. Courts, Charles Lyon Corbin, George Smock Hobart

1906

by Charles Richard Van Hise

1910

by Charles Richard Van Hise

1909

by Charles Kenneth Leith

1903