Not being a regular visitor to the Powder Room, I don't know if anyone has already posted this link: The Museum of London has a wonderful online archive of ladies fashion. It seems to have a bit of everything: I hope you have fun searching through the archives. There appear to be thousands of photos. I did a search for photos of hats between 1920 and 1940 and there were more than 1000 results just for one photography studio!!!!