Motorcycle race 3 is backwards,,, rider is #53, but haven't found him in the program yet. #4 is listed as George Seeger, #37 is Chuck Basney (I know Chuck Junior), #22 Louis Lista.
Was thinking the track was SirKegian Stadium, but not so, It materialized between 1948, and pop's number had changed to 49x by then.
If the photos were in better resolution, I would take them to a couple vintage friends of mine and ask a few questions. But do know for sure, #46 is my dad and 37 is Chuck Basney. Still haven't placed the track, that is what I need Parti or Ekins for. One is a history buff and the other has been there/done that and has a sharp memory.
susie