I'm a bit obsessed with this website. It's a stock photography site where you can search for anything. I typed in "vintage" and came up with tons of great stuff. Unless you pay, though, the images are small, but perfect for emailing or finessing blasé Facebook events; make your own hilarious e-cards, perhaps! (Some knowledge of Photoshop will help, as making screen caps and editing out water marks will increase your image size and quality.) Have fun!