Label on back reads "Another Tinkham Reunion."
In the middle row, the second person from the left appears to be Magdalena (Helen) Pirson Detenbeck. The person next to her may be her daughter, Florence Detenbeck Heist.
Behind Florence appears to be her husband, Howard Heist. The child who has been marked may be Helen Heist.
The Tinkhams are relatives on the Heist side of the family.