Gidley, James Williams, 1866-1931

Consist of diaries, lists of specimens found, locations of finds, records of day to day activities, and step by step findings. Individual lists can be found with both the Charles H. Falkenbach and Ted Galusha Papers. The diaries are arranged by date and filed as nearly as possible in chronological order. Notable names in the field diaries include H. F. Osborn, Walter Granger, Barnum Brown, and G. G. Simpson.

The field correspondence were written by field workers relaying events during excavations and expeditions. The collection includes department field communications from 1891 to 1969. While Henry Fairfield Osborn was in the department, the letters were addressed primarily to him, but later letters were addressed to others. Notable names in the field correspondence include Walter Granger, Barnum Brown, Ted Galusha, Charles Falkenbach, and G. G. Simpson. The years 1962-1968 are missing.