Letter from Wilson A. Bentley to Smithsonian Institution Secretary Samuel P. Langley offering to send his photographs of snowflakes to the Smithsonian Institution to prevent any damage from befalling them. Bentley invented the technique of microphotography of snowflakes and took thousands of photographs throughout his life. December 15, 1904. 4 pages.
Contained within:
Smithsonian Institution Archives, Record Unit 31, Box 13, Folder: Bentley, Wilson A. 1904-1905