What early 80's set are these cards from?
 

Guys............I've been stumped trying to figure out what set these signed cards are from. I'm guessing they're from the early 80's, and some sort of HOF set like the TCMA's or something along those lines, but the backs are blank with no more info. Any ideas?

Thanks in advance............Matt

Looks like pieces of several 1977 Jim Rowe exhibits. Weird thing is those should be yellow, maybe they were reprinted later in white?

I don't really collect modern exhibits so unsure of the print runs but those are the same photos Rowe used.