Some time ago, "G. Wolf" was looking for Marvin Shindelman, The Seltzaer Man. I replied that I had seen a seltzer man on my block but wasn't sure who it was.
Well, he was there this morning and it is indeed Mr. Shindelman. His # is (718) 984-7705 according to the truck. So, it turns out is is alive and well and delivering seltzer as usual - working telephone or not.
Good luck tracking him down, Wolf.