Sesame Street / Season 8 S8E114 The Amazing Mumford makes things go up and down (1039) Sesame Street Netflix Share WhatsApp Telegram X (Twitter) Facebook Copy link Aired 18073days : 15hours : 53min : 44sec Thursday, May 5, 1977 at 7:00 AM (Eastern Time) Synopsis This episode has no synopsis. Previous episode S8E113 Fred the Wonder Horse explains body parts (1038) Next episode S8E115 Big Bird decides to become grouchy (1040) Data from TVmaze (CC BY-SA). Updated October 28, 2026, 19:31.