Have you tried Larry Lester of Noir Tech? If you haven't heard of him, he is a well-published Negro League author and Noir Tech is his company which is essentially a giant data base of Negro League photographs that he has license to and rents out. He's very helpful in finding photos and outside a serious collector he would be your best bet at finding what you need. You can also try a guy names Gary Ashwill through his blog (
www.agatetype.typepad.com) he is probably one of the best and most detail oriented N.L. researcher out there and he might have something in his extensive files for you. I can't tell you how many newspaper photos he has dug up for me that have never been seen since the time they were first published.
Good Luck!