Nah, that would be EASY. I'm thinking some Sun Records label Elvis 45s, maybe a couple Warlock albums. Oh, and the original Robert Johnson 78s from 1937.
If you do pull those out, btw, I'm going to have a heart attack.
If it wasn't so late, I'd be tempted to take a photo of my Blind Lemon Jefferson on Paramount or a group of Sun Records.
Instead...this will have to do.
The Beatles first recording (promo copy).
I picked up a nice original owner blues 78 collection many years ago. Robert Johnson's "Milkcow's Calf Blues" was in it. I traded it for a "nice" guitar. Most of the collection is still intact and this thread made me want to dig the records out to take a look. Lots of early Vocalion, Okeh on up through Chess, Trumpet, Specialty, etc.