This exceptionally rare war helmet can be seen in an early photograph by Winter and Pond entitled “Takou Chief Lying in State, Alaska” now in the collection of the Alaska State Library (Cat. No. 87-2680).
Rickenbach, Judith. Tlingit: Alte Indianische Kunst Aus Alaska. Zurich: Museum Rietberg, 2001, pgs. 222, 225 - 228, 232-234, 237