Kathy, I just came on here to post the very same type of note as you posted years ago, and was encouraged to see you had success making connections for that photo.
If you are still on here and see this note, I'd love to hear from you if you have any suggestions for me on how to find info on the men in the photo. My photo was from the same training station, but dated April 6, 1942, a bit earlier than yours. It is my father-in-law's copy, so I'm not willing to part with it, but I do want to be able to identify the men in the photo, particularly the 12 who signed the back of it.
I posted the photo there in hopes some others could help identify the men, and so others can have digital copies if they wish. I'll be making a post on this forum, too, and other places (like facebook) in hopes of finding people researching this group.
If you have any hints for me on completing this hunt successfully, I'd love to hear from you!