- Islandora Repository
- Mss.B.B61_H
- Hansen, Andreas: To Boas. 1931 Dec. 7
- Hansen, Ernest: From Boas. 1920 Oct. 27
- Hansen, Ernest: To Boas. 1920 Oct. 12
- Hansischer Geschichtsverein, Lübeck: From Boas. 1923 Mar. 5
- Hansome, Marius: From Boas. 1919 Dec. 15
- Hansome, Marius: From Boas. 1919 Oct. 29
- Hansome, Marius: From Boas. 1919 Sept. 18
- Hansome, Marius: To Boas. 1919 Nov. 29
- Hansome, Marius: To Boas. 1919 Oct. 9
- Hansome, Marius: To Boas. 1919 Sept. 7
- Hantzsch, Bernard: From Boas. 1908 Apr. 28
- Hantzsch, Bernard: From Boas. 1908 Mar. 17
