I thought that might be a baby grand piano the guy is sitting behind in the background. I love the picture because Don and Walt look like they've achieve Peak Coolness.
King Gizzard's "Quarters", an album of 4, 10-minute songs, has a "gatefold" that opens up to a 24"x 24" spread, a quarter for each song, like so:
I saw Kiss on the '79 tour and we were sitting close enough that you could feel the heat from those flames.
Funkadelic - One Nation Under A Groove (hope this isn't banned) Mini version (the color is much better):
Yeah, its one of my favorites. I remember showing my Mother that gatefold. She must have been bugging me to close my door and lower the music. Needless to say, she wasn't as impressed with the photo as I was.....