"For it is in this inadequate flesh that each of us must serve his dream, and so, must fail in the dream's service."
-Imogen Cunningham

In a conversation between Ansel Adams, Dorothea Lange, and Imogen Cunningham (recorded in U. S. Camera Magazine, August, 1955), the question of the danger of categorization came up. Dorothea Lange complained that she was put into a niche called "documentary photographer." She pointed out that Ansel Adams was typed as a landscape photographer. "And as far as Imogen is concerned, because she enjoyed photographing plant forms..." Imogen interrupted: "Oh people have forgotten that, Dorothea. They’ve forgotten that I ever did plant forms. You know, I’ve tried my best to sell people on the idea that I photograph anything that can be exposed to light." Her best photograph, she always felt, would be made tomorrow.
from this site.

here are some more of her fotos.
and some more.