Cope, E. D. (Edward Drinker)

Letters, notebooks, notes, and sketches related to Cope's work in paleontology and related natural sciences. Also sketches of birds, reptiles, and amphibians, some colored. Letters on various scientific subjects from Alexander Agassiz, Louis Agassiz, Alexander Graham Bell, Pliny Earle Chase, Havelock Ellis, Benjamin Apthorp Gould, Arnold Henry Guyot, Joseph Henry, Oliver Wendell Holmes, Thomas Henry Huxley, Maria Mitchell, Sir Richard Owen, Robert Edwin Peary, Herbert Spencer, and others.