a. copy of correspondence from Major Ahern to General Charles J. Summerall refusing an invitation to meet Red Tomahawk because he is the man accused by the Indians of killing Sitting Bull, 1929.
b. correspondence from Ahern proposing that Campbell write a book on famous Indian chiefs, 1929.
c. a series of questions about Sitting Bull, posed to Ahern in a letter from Campbell, 1929.
d. correspondence from Ahern, answering the questions posed to him by Campbell, 1929.
e. correspondence regarding the omission of the chapter on the period of Sitting Bull as a prisoner of war, 1932.
f. typescript of Forest Bankruptcy in America by George P. Ahern, n.d.
g. correspondence with Ahern regarding Sitting Bull.