Janis Joplin
Joni Mitchell
Linda Ronstadt
Natalie Merchant
And what about Blind Faith and Cream's Disreali Gears?
Also left out ole Joe Cocker w/ his first album as well as Traffic w/ Winwood, Capaldi and Mason
In retrospect there was so from about 67-72/73 its hard to single out. What about and being quite serious: Jefferson Airplane w/ Crown of Creation (and overlooking Gracie who by now is probably a great grandmother) and feel free to laugh.
I thought about those 2 albums in compiling my list but had to cut somewhere. Stevie Winwood sure got around in those days as did Clapton. Also glad you mentioned those great ladies of rock and Jefferson Airplane w/Glacie Slick. I appreciate the work JA did in the early days of Rock but I was never all that much of a fan.