I have been doing the family tree of my step mother-in-law, Saralee Entin Singer Pincus(Morris Entin, Samuel Entin). She is your first cousin, 1x removed. I have information and documents to share. I think she might recognize some of the people in the photo you mention. I recently found photos from the 20's and 30's posted on line by your second cousin, Sue Rouda (Lillian Entin, Abraham Entin, Samuel Entin). She knew everyone in the pictures.