MLA

Asakawa, Kan'ichi, 1873-1948. Asakawa family. Box 4, folder 39 | reel 3U. 1895, undated. https://collections.library.yale.edu/catalog/32204039.

APA, 6th edition

Asakawa, Kan'ichi, 1873-1948. (["Box 4, folder 39 | reel 3U"])(1895, undated)[Asakawa family]. https://collections.library.yale.edu/catalog/32204039.