USC All-Sports Heroes Cards
 

Does anyone have any information about this set of cards produced by College Classics in the early 90's? A friend came across a set of these cards in a binder that belonged to her father-in-law and they are not sure what to do with the set. It seems to have been a limited edition set of 100 cards featuring USC athletes from all sports, and it also appears to have been supplemented since the original issue with updates of more recent stars. Any information will be deeply appreciated!