- Islandora Repository
- Mss.B.B61_E
- Egbert, James C.: To Boas. 1923 Jan. 19
- Egbert, James C.: To Boas. 1923 Jan. 23
- Egbert, James C.: To Boas. 1924 Nov. 6
- Egbert, James C.: To Boas. 1924 Oct. 27
- Egbert, James C.: To Boas. 1924 Oct. 31
- Egbert, James C.: To Boas. 1927 Dec. 9
- Egbert, James C.: To Boas. 1930 Jan. 31
- Egbert, James C.: To Boas. 1931 Apr. 20
- Egbert, James C.: To Boas. 1931 Mar. 5
- Egbert, James C.: To Boas. 1931 Nov. 18
- Egbert, James C.: To Boas. 1931 Oct. 15
- Egbert, James C.: To Boas. 1938 Oct. 13
