- Islandora Repository
- Mss.B.B61_E
- Engerrand, Jorge C. (George C.): To Boas. 1912 May. 13
- Engerrand, Jorge C. (George C.): To Boas. 1912 Nov. 13
- Engerrand, Jorge C. (George C.): To Boas. 1912 Nov. 18
- Engerrand, Jorge C. (George C.): To Boas. 1912 Nov. 24
- Engerrand, Jorge C. (George C.): To Boas. 1912 Nov. 30
- Engerrand, Jorge C. (George C.): To Boas. 1912 Nov. 4
- Engerrand, Jorge C. (George C.): To Boas. 1912 Nov. 5
- Engerrand, Jorge C. (George C.): To Boas. 1912 Oct. 14
- Engerrand, Jorge C. (George C.): To Boas. 1912 Oct. 29
- Engerrand, Jorge C. (George C.): To Boas. 1912 Sept. 14
- Engerrand, Jorge C. (George C.): To Boas. 1912 Sept. 14
- Engerrand, Jorge C. (George C.): To Boas. 1912 Sept. 18