Answer, these are from the 1948 Celtics, from left, Mel Riebe, Art Spector, Ed Sadowski, Jack Garfinkel, and Saul Mariaschin.
Garfinkel appears to still be alive. Here's the most recent business card I could find for him:
And here's him in another picture with the Celtics:
tb727 7/28/2012 11:18:00 PM Tweet