Correspondence and drafts of the novels Tan faced children, Riley's last hunt and the short story, "Modern humor." Includes incoming correspondence for wife Rodello Hunter as well as correspondence for Frank Calkins.
Mainly drafts and final copies of his three major publications (Rocky Mountain Warden (1971), Jackson Hole (1973), Long Riders' Winter (1983), along with correspondence and diaries. Correspondence mainly between Calkins and the Alfred A. Knopf Pub. Co., and various government agencies as part of Calkins research for his first book, Rocky Mountain Warden. The collection also includes information on the Western Heritage Association which granted Calkins the 1984 Western Heritage Award in the fiction category for his book Long Riders' Winter (1983).