Jerry Garcia, Phil Lesh, Bob Weir, Ron McKernan, and Tom Constanten formed the Warlocks in 1965. They became the Grateful Dead in 1968 or thereabouts. They were pretty well known in the Northeast (mainly because of Bill Graham) in the late sixties. 1970 was a pretty big year for the Dead. 1972 was when they made their first trip to Europe and became a global phenomenon. 1977 is considered by many to be their best year; they were at one of their creative peaks. You can still find some stellar shows from 1980, 1985, 1987, and the spring of 1990 too. The Grateful Dead ended when Jerry died in the Summer of '95, but IMO they should've called quits after Brent Mydland's death in the summer of '90. JMO.