"Whales and Nightingales" - 1970 Nov 12 (Certified Gold, 1971 Apr 6) - Elektra EKS-75010 (stereo LP), 75010-2 (CD), TC5-75010 (cassette) This was recorded at St. Paul's Chapel at Columbia University in New York City with many of Judy's friends forming the choir.

There's a small book, that I have only as a photocopy where Judy writes about the meaning of Amazing Grace for herself. From what I remember, she says she grew up in a church where it was sung so she knew it all her life. She's also included in Bill Moyer's PBS program on Amazing Grace so you could see if you can find the video & see what she has to say. I watched it, but have forgotten.

There's a detailed discography of both Judy Collins & Joan Baez in rec.music.folk from July 1997. The Subject line is Amazing Grace as Folk. You can try to locate it at groups.google.com. I'm not sure how to link directly, but maybe this will work. Really ugly clicky