- Islandora Repository
- Mss.B.B61_W
- Wagner, Max Leopold: From Boas. 1920 Oct. 27
- Wagner, Max Leopold: From Boas. 1920 Sept. 3
- Wagner, Max Leopold: From Junge &; Sohn. 1920 Feb. 12
- Wagner, Max Leopold: From Junge &; Sohn. 1920 Feb. 17
- Wagner, Max Leopold: To Boas. 1913 Dec. 15
- Wagner, Max Leopold: To Boas. 1913 Dec. 29
- Wagner, Max Leopold: To Boas. 1913 Dec. 30
- Wagner, Max Leopold: To Boas. 1913 Nov. 11
- Wagner, Max Leopold: To Boas. 1913 Nov. 11
- Wagner, Max Leopold: To Boas. 1913 Nov. 26
- Wagner, Max Leopold: To Boas. 1913 Oct. 8
- Wagner, Max Leopold: To Boas. 1913 Sept. 1
