Portrait Gallery a service of the Perry-Castañeda Library, University of Texas at Austin, is a collection of pictures of historical figures scanned from books in the public domain. It’s been around for over a decade, and it continues to be a good place to go when you need a picture of Florence Nightingale or Charles Dickens or Joan of Arc, whether you are helping a library user find an image for a project, or looking for something to add to a page on your website.
These are images scanned from books in the public domain, so the images here are all pretty old, and the quality varies depending on the original book source. You won’t find a picture of Martin Luther King, Jr. or Albert Einstein here, and the picture of Winston Churchill shows him as a young man — it’s World War I Churchill, not World War II Churchill. But for pre-20th century artists, authors, composers, explorers, scientists and statesman, it definitely a useful source.
And because these images are all public domain, you can do whatever you want with them — print them out and use them on posters or for craft projects, resize or crop them, colorize them, add text them, or combine them into an artful collage. They are also fun to play around with using various online editing sites.