October 1972 - October 23, 1972 (Monday)

October 23, 1972 (Monday)

• The United States halted bombing of North Vietnam above the 20th parallel, bringing to a close Operation Linebacker after nearly six months.
• The musical Pippin, with music and lyrics by Stephen Schwartz, directed by Bob Fosse, and based on a book by Roger O. Hirson, began its run at the Imperial Theatre on Broadway, and went on for 1,944 performances. The production was based on the life of Pepin the Hunchback (769–811), the son of Charlemagne.
• At Johns Hopkins University, Dr. Solomon H. Snyder and his assistant, Candace Pert, made the critical discovery that the receptors for opiates were in each brain cell, and the search began for opiate substances within the body, later called enkephalins.