a. Typescript of “Frank North: A Leader of Men,” from The Fighting Norths and Pawnee Scouts by Robert Bruce, 1932.
b. correspondence from J. William DeGrange regarding a list of subjects in the Archives of the Corps of Engineers, War Department, 1933.
c. a form letter by Campbell addressed to “Dear Lieutenant,” regarding ways to be a good officer, 1942.
d. correspondence with Nell A. Snider regarding the Indian wars, 1945.
e. correspondence with Mary O’Grady of the United Indian War Veterans, regarding veterans of the Ute campaign, 1956.
f. a typescript biography of Patrick Edward Connor from the Dictionary of American Biography, n.d.
g. miscellaneous correspondence regarding the descendants of army officers, 1928-1956.