I was thinking that too and searched Scholastic Press a couple days ago before I saw these in person and didnt find anything exactly. Scott brought it up that he remember seeing similar sounding pictures in school, so when I went I was thinking they might be the same age as the date stamped (1983), but after seeing them I think they are older, nothing at all after 1950s, some football ones and maybe an Olympic ones "looked" 1950s, but I couldnt ID the subject exactly, some action shots, etc.
Every single subject I saw is Sports related, so the SP might be that too ?
PS my internet is super slow so pics taking long time