 culminating with two armed robberies at knife point. Also today, deadheads and those of the same quilts assemble this weekend in Townsend. WDEL's Rachel Suga with more. Weekend at Bertha's is a three-day event paying homage to some of the hippie and counterculture trends of the last century. Shelby Sachs, one of the Weekend at Bertha's organizers, says that the weekend is a unique experience.