Early 1970's rock: Name some of your favorites

Somehow Spirit jumped into my head when I read the title to this thread. The 20-bit remaster of my fave Twelve Dreams of Dr.Sardonicus should be required listening for this group. "Nature's Way" was a minor hit. "Animal Zoo" and "Mr. Skin" also got air play. This album really captures some of what was going on back then.
Old Zappa (his best), Floyd, Tull's first few albums, early Yes, ELP, King Crimson, Strawbs, ect. Lots of stuff already covered above, great music to go back to, especially on vinyl. Now you've done it. Ok, great, Im not going to get anything done today.

Sean; I must have been in a coma or doing hard time during this period-- or most likely into C/W. Thank God CCR made it into the early 70s. Cheers. Craig

America
Ozark Mountain Daredevils
Jackson Browne
Eagles
Karla Bonoff
Greg Alman

I'm surprised at all the Progressive rock entries on this thread.Cool ! IMHO the best rock was from the mid 60's to the early 70's starting with Psychedlic,evolving to Prog.ArtRock,Glam,Hard rock and The real Blues rock jam Bands etc.Great times.and Progressive and Psych are still going big time though still underground meaning no or very little airplay.I wish the classic rock stations would play non hit cuts instead of the same old Stairway to Freebird Dark side cuts.How about the rest of the songs on the Doors 1st album besides Light my Fire?How many of you would listen to the radio more if if was like the early days of then underground FM radio?

In no Particular order & ones not already mentioned
Doors
Cat Stevens
Yes
J Giles
Boston
Bad Company
Boz Scaggs
Deep Purple
Fleetwood Mac
Leon Russle
Jefferson Airplane/Starship
Guess Who
ZZ Top
Bruce Springstien & the E Street Band
Yes
Mott the Hopple
Uria Heep
Chicago Transit Authority
Richie Havens
Canned Heat
Melenie
"ALISION STEELE - the night bird for all you NYers/NJ"
I can keep going on but burning out