Instant History/Otogi Manga Calendar (partially found anime series; 1961-1964)
Otogi Manga Calendar is a Japanese anime series produced by Otogi Production that aired from 1961 to 1964 on Fuji Television, then later on TBS. It was the first anime series ever broadcast in Japan. The series was split into two seasons. The first season, Instant History, aired on Fuji Television from May 1, 1961 to February 24, 1962 for 312 episodes. The second season, "Otogi Manga Calendar", aired on TBS from June 25, 1962 to July 4, 1964 for 312 episodes. The series focused on characters learning about historical events that happened on that day. It often featured photographs and film footage taken from the Manichi Shinbun newspaper.
The series never received a home media release and is very rare. It's unknown if any episodes from both seasons survive, however, it's possible that the master tapes either got lost or were destroyed. It's very unlikely that anyone recorded a single episode to the series, as recording television broadcasts during the time was extremely limited and bulky.