marijuana possession in 1965, Rohan became the go-to attorney for illegal drug charges, the Chronicle said.Rohan co-founded the Haight Ashbury Legal Organization and the group recruited clients in part by setting up a table outside the Grateful Dead house at 710 Ashbury Street.Thanks to his association with the Grateful Dead, Rohan also became a music lawyer. In 1966, he helped the band negotiate its first contract with Warner Bros.