Singer, songwriter, and guitarist Jim Sullivan only released two albums, one in 1969 and a second in 1972, but neither sold well, although his talent was obvious, and it's easy to imagine that he would have eventually have had a commercial breakthrough had he not mysteriously vanished in New Mexico in 1975, a disappearance that has yet to be solved or explained. A fixture on the West Coast and Malibu music scene, Sullivan, a former high-school quarterback, rubbed shoulders with the hip and famous in the late '60s and early '70s, hanging out with actors like Harry Dean Stanton,...