After penning the article below, I was looking for a picture of the elusive Walter Carlisle (didn’t succeed), but I did find a nice page at the Library of Congress Website that has some nice pictures that you can download. Digging around more, you can find their collection of 2100 early baseball cards. I’m listing this under public domain resources, but you should be careful when downloading these to research and obey any license restrictions that are placed on these images. Enjoy!