This photo was labeled as Jo Schuler by Bruce of LA. In the archive there is one photo of a Joe Schuler by AMG. I can't say this is the same guy because the AMG photo has Joe wearing a helmet, but I wouldn't put money on it. Frankly, I think this photo looks more like AMG than Bruce.
Photoplay says this is Bob McKibbon. Click his label to see another photo from the same locale. And it's AMG. I'm sure of it now.

