Aldous Huxley's book "The Doors of Perception"
Huxley's title was in turn inspired by William Blake's poem of the same name.
Source: The Gazette (Montreal), 12/9/1993

July 3, 1971
On July 3, 1971, Morrison's body was discovered by his girlfriend Pam Courson in the bathtub of the apartment they had borrowed at 17 Rue Beautreillis.
Source: AP, 2/24/1991