From the San Francisco Chronicle...

He was a psychedelic cowboy who rode the bus with Ken Kesey and took virtually every step of the long, strange trip with the Grateful Dead. Known to one and all solely as Ramrod, he died yesterday of lung cancer at Petaluma Valley Hospital. He was 61.

"He was our rock," said guitarist Bob Weir.

[...]

Ramrod joined the Dead in 1967 as truck driver and was held in such high regard by the members of that sprawling, brawling organization that he was named president of the Grateful Dead board of directors when the rock group actually incorporated in the '70s. It was a position he held until the death of guitarist Jerry Garcia in 1995.

[SFGate.com] Mainstay of Grateful Dead crew dies