Today marks the anniversary of the Aug. 5, 1962, death of Marilyn Monroe, after a barbiturate overdose in her home in the exclusive Brentwood neighborhood of Los Angeles.

Her sudden death at just 36 years old shocked the nation — in part because just three months prior she had given one of her most famous performances. Decked out in a skin-tight, nude-colored dress, she sang “Happy Birthday” to President John F. Kennedy, who was turning 45 later that month, at a rally at Madison Square Garden on May 19, 1962.

The performance remains a cultural touchstone decades later, and is also noteworthy because that event produced what is considered the only known photograph of Monroe and Kennedy together.

The image, shown here, was taken that night at an after-party at the Manhattan townhouse of Hollywood exec Arthur Krim, by official White House photographer Cecil Stoughton.