I’m listening to the Double Vision album by Foreigner and does this album ever scream the 1970s. No one will call this the best rock album of the 1970s, probably not even top 25. But, just by listening, I’m transported right back to the era of 70s cars, 8 track tapes and can even smell the omnipresent cigarette smoke in the bar as Foreigner blasts from the jukebox.
Any other candidates for albums which immediately transporter you to the 1970s and really couldn’t have been released in any other decade?
Lynyrd Skynyrd - any album, but I wore the grooves off of One More From The Road.
And if speaking of '70’s rock I will always float Violation by Starz. Not well known, a power-pop-rock outfit from NYC. They’re label mates were Angel and they were produced by Jack Douglas, who produced Aerosmith. Their rhythm section was the remnants of Looking Glass of Brandy fame, but their style was more akin to KISS meets The Ramones.
I’d go with Toys in the Attic in 1975 and Rocks in 1976. But those awful power ballads they shoehorned in are strictly unnecessary.
And Exile on Main Street, as also mentioned upthread.
Over the span of 19 months (February '71 to September '72), they released The Yes Album, plus those two, as well. An impressive creative output, in a pretty short period of time.
Pick a Black Sabbath album. (ETA: Though, with the qualification “couldn’t have been released in any other decade,” they really so forward-thinking that I think 80s, 90s, hell now, it wouldn’t seem so out-of-time.)
Besides those already mentioned, there were a lot of other classic live albums: Live at Leeds, Wings Over America, the Filmore sets by Allman Brothers and Humble Pie, Deep Purple Made In Japan, Wishbone Ash Live Dates…