which lineup would have played at my high school not long after 'incense' was all over the radio? (Cleveland high school, san fernando valley 67-69)

i remember the had a white travel-trailer with SAC embalzoned on it in black lettering, parked next to the gymnasium
i was surprised then, and even more now that there were seemingly many 'name' bands with hit records out ( S.A.C, the Doors,etc) playing day-time gigs at schools around the san fernando valley !!?
('Cream' played at Valley state college (now CSUN)-also in the Gym, at around the same time;-)

that enclosed travel trailer was about the hippest setup for getting to a daytime gig ;-)
thanks-
scott/www.HarmonicDesignUSA