John P. Clum was the Indian agent at the San Carlos Indian Reservation, 1874-1877; later newspaper editor, postmaster, and mayor of Tombstone, AZ, as well as postal inspector and lecturer in Alaska. His son, Woodworth Clum, was a newspaper editor of the Washington (D.C.) Star, and author of a book about his father entitled Apache Agent.

Collection includes correspondence, diaries, scrapbooks, photographs, typescripts, newspaper and magazine articles by or about John P. Clum; a smaller quantity of typescripts, reprints, and biographical items concern Woodworth Clum. Much of the material consists of writings by the Clums and others about the Apache Indians, Geronimo's capture, and events in Tombstone.