Beat Me With a Stick

I can't remember where I heard it, but beat me with a stick is something I've heard at one time or another.

Anyway, written on the back, "Rebeal 1947, Malcolm Salinger, Jan Castsanien."  Now, I guess that makes some sort of sense, two names, two people.  But then, "Peggy Schull, Jan Castanien, Salinger, Denison, N W Ines."  Okay, I've got two names and since Malcolm and Jan get named twice, I guess that's Jan and Malcolm fooling around in the photo, but why did Peggy, Denison, and Ines all get mentioned?  And Rebeal?  I did a search, and Rebeal is an actual surname, so is that yet another unseen person, or the name of the beach?  As usual, more questions than answers.