Well... you've got Rabbit Maranville, Frank Frisch and Lefty Grove for starters... three pretty good HOFers. If you can post some more/clearer pics, perheps we can help you more. I am pretty close to identifying a couple of oothers, but my small cell phone screen and bad eyes are keeping me from making any definitive determination. I bet some others here (with a full monitor) can chime in with more...
Great pickup... I just love the oddball stuff from this golden era