Thank you Tammy.
I found the set you referred to on e-bay last night, also. Just wish they had posted more information about the history of the set. The age of these sets and the fact that my parents hung on to them for forty (40) years, makes me question why they are so special?
By the way, no I don't have any binders, at least I haven't found any to date. Considering how carefully packaged they were when packed away, indicates that there were no binders.
Sharon