On Viewfinder you can read photo essays relating specifically to Women's History. This example is from the 'England at Work' collection and is the photo essay on 'Women at Work'.
Example: Florence Nightingale in ViewFinder
You can enter the wording Florence Nightingale in the Home page 'Search' box and you get 31 results. Two images relate to hospitals and the rest are of a Florence Nightingale statue