Ryabushinsky expedition to Kamchatka photographs, 8913, manuscript box: 20 - Folder 1. Division of Rare and Manuscript Collections.
Ryabushinsky expedition to Kamchatka photographs, 8913, manuscript box: 20 - Folder 1. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/resources/12051 Accessed July 25, 2025.
