You may well have a trademark issue, with that Tigers D... not that great of a concern if it is a not for profit activity. MLB licenses all of that stuff. What's your website going to be doing?
And the likenesses of Ruth and Cobb are protected and trademarked, and active. I think something called Curtiss Managment. I just Googled it, Curtis Management Group is the name. Here's a link to an article that mentions it.
http://sportsillustrated.cnn.com/vau...1565/index.htm
They may well market Wagner, and others, too...