Drugs used include barbiturates, benzodiazepines, cyclopyrrolone[?], chloral hydrate[?], chlormethiazole[?] or the antihistamines[?] promethazine and diphenhydramine.
... diplomat, winner of the Nobel Peace Prize April 16 - Fifi D'Orsay, actress (+ 1983) April 22 - Robert Oppenheimer, physicist (+ 1967) May 6 - Harry Martinson, ...