Probably the first Beatles album, Meet the Beatles.

Many of my old "gatefold" LP albums still have traces of ancient weed in the middle of them. Opened, they were perfect for cleaning, rolling joints, etc., and you could view album lyrics, photos, artwork, etc. at the same time.

Some of the gatefold albums I had, and still have in some cases, are the White Album (Beatles), Follow the Yellow Brick Road (Elton John), Live at the Fillmore East (Allman Brothers), WOW (Moby Grape), AXIS Bold as Love (Jimi Hendrix), and others.

I still have a box of 8 track tapes - but I never really used them back then. They were fun, though. How else could you hear a little of the B side of a recording while listening to the A side? I even have a JVC 8-Track recorder, just the thing to transfer CD's to for vintage sound played back on a battery-driven 8-track Panasonic portable player (which I also have somewhere under the bed), a car player, or home deck. Some of the better early home 8-track decks even had vacuum tubes in them, but I've never found a used one for sale. Still looking, though!