Original name of the Grateful Dead:

The Warlocks

Source: Tom WOLFE, The Electric Kool-Aid Acid Test, 1/1/190

 
   
  Sign on the front of the Merry Pranksters bus:

FURTHER

Source: "The Drug Years", 1/1/1900

 
   
  Number of times the Grateful Dead played at Madison Square Garden:

52

Source: Chicago Tribune, 3/26/2007

 
   
  Creators of the Grateful Dead logo :

Owsley Stanley and Bob Thomas
The logo was created in 1969 as a means of differentiating the Dead's musical equipment at live performances from the equipment of other bands.
Source: Bear.org, 1/1/1900