Imogen Cunningham (/ˈkʌnɪŋəm/; April 12, 1883 – June 23, 1976) was an American photographer known for her botanical photography, nudes, and industrial landscapes. Cunningham was a member of the California-based Group f/64, known for its dedication to the sharp-focus rendition of simple subjects.
After graduating from college in 1907, Cunningham went to work for Edward S. Curtis in his Seattle studio, gaining knowledge about the portrait business and practical photography. Cunningham worked for Edward S. Curtis on his project of documenting American Indian tribes for the book The North American Indian, which was published in twenty volumes between 1907 and 1930. Cunningham learned the technique of platinum printing under Curtis’ supervision and became fascinated by the process.
[from Wikipedia: https://en.wikipedia.org/wiki/Imogen_Cunningham]