The Family Dog was a loose collective of free spirits managed by Chet Helms, a contemporary of Bill Graham, who put on rock dances at the Avalon Ballroom more or less continually from 1965 to 1970. These almost-nightly events, like those hosted at the Fillmore, were more than conventional concerts; they were social gatherings with plenty of dance, music and light. Some of the early Family Dog posters are among the most significant art of the period.