Amazing, Simply amazing.
I have 2 Queen 'cabinets' completely filled with a TON of rare items, and I can't even BEGIN to compare to your (excellent) collection!
Very nice!
Wikipedia:
>The first EPs were seven-inch vinyl records with more tracks than a normal single (typically four to six of them). <
So....EPs "can" be 7 inch...eg: I have such one by the Byrds.
Nonetheless...EP....single....typo...a nice article IMO by a trusted local newspaper reporter.