Marcel PETIOT (1897-1946) doctor and criminal. P.A.S., 12/12/1941; 1 page small in-8 on his letterhead and address (folds, yellowed paper). Prescription for heroin hydrochloride, prescribed to Mr. Parent in Neuilly, with 3 lines of dosage: "1 or 2 per day if necessary dose p 7 days"...