- Islandora Repository
- Mss.B.B61_K
- Kittridge, George L.: To Boas. 1909 May 17
- Kittridge, George L.: To Boas. 1909 Oct. 25
- Kittridge, George L.: To Boas. 1912 Dec. 4
- Kittridge, George L.: To Boas. 1912 Feb. 18
- Kittridge, George L.: To Boas. 1912 Nov. 3
- Kittridge, George L.: To Boas. 1912 Nov. 4
- Kittridge, George L.: To Boas. 1912 Nov. 5
- Kittridge, George L.: To Boas. 1912 Nov. 7
- Kittridge, George L.: To Boas. 1912 Oct. 27
- Kittridge, George L.: To Boas. 1912 Oct. 29
- Kittridge, George L.: To Boas. 1913 Feb. 11
- Kittridge, George L.: To Boas. 1913 Jan. 13
