Found a webpage with some Fleetwood Mac bootleg reviews by Richie Unterberger. A lot of his disc reviews - including a number of discs with early Mac material - are in the excellent "All Music Guides" books & website. The two boot reviews are on his own website:
http://www.richieunterberger.com/summer2004albums.html
He includes brief reviews of two Fleetwood Mac bootlegs from the '68-'70 period -
Helsinki Carousel and
Dead Bust Blues. The shows included on these bootlegs - Carousel Ballroom, San Francisco, June '68, Helsinki, Sept. '69 (probably not spring '69 as in the review), and New Orleans, Jan. '70 - have been around on other bootlegs for awhile. Nice to see these reviews, though.