The British Library put out over a million images from their collection, free to use, at https://www.flickr.com/photos/britishlibrary/. There's probably something in there is you're able to filter through it.
The British Library put out over a million images from their collection, free to use, at https://www.flickr.com/photos/britishlibrary/. There's probably something in there is you're able to filter through it.