Even more FZ and Kiss
Kind of a cheat here because this was released officially by the powers that be in the FZ camp, but what the hell, it's live and it's great early stuff from a Fullerton California in 1968 (Nov. 8th to be exact). I'm pretty sure it's out of print now, too. It's Our Man In Nirvana from the Mothers of Invention.
And no cover from this, but here is something I've had for years. It's a collection of demos from my favorite Kiss studio album of the 70's, Destroyer. Interesting stuff ripped at 320k. It does unfortunetly have a bit a tape hiss, but was ripped from CD.