Judy, I think that after Peter Green left it was all over. But there's no denying that every subsequent incarnation had its fans, esp. the last one. I'm not among the fans of the later groups but the first one was amazing.
Fleetwood Mac
Saw an interview the other day on CNN with Mick Fleetwood, Stevie Nicks, Lindsay Buckingham, and Christine McVie. Apparently they're getting back together for a tour (someone ran out of money?). The CNN crawl read "the original Fleetwood Mac back together. Seems they don't remember there was Peter Green, Danny Kirwan, and John McVie. How quickly they forget. I suppose there's a generation who only knows the "Rumours" era Mac. To me there were 3 Macs-the Green and Kirwan Mac, the Bob Welch Mac, and the group mentioned above.