I’m always looking for interesting photos to hack on, so I was glad to find these two sources of free images, both via Vormplus.
New Old Stock: “vintage photos from the public archives free of known copyright restrictions.” Old photos with the fuzzy haze you’d expect. Some have no indication of age besides the color fading, but others have elements that clearly mark them as old.
Unsplash: “Free (do whatever you want) hi-resolution photos. 10 new photos every 10 days.” You can subscribe via email, too.