Posted By:
runscottCuriously, "Leroy S." is scratched directly below the top middle player (but at bottom of photo), "Dooley" is below and to the left, under that guy on the bottom right. I didn't notice the writing at first - it's faint, but showed up when I held the photo at an angle to the light.
But I'm fairly sure the photo is from the late teens or early '20s, based on the way the "managers,etc" are dressed in the full photo, and I didn't think that guy looked like Satchel Paige.