Peanuts by Charles Schulz for November 16, 1990

Miss Othmar is back again as the teacher of Linus, after an absence of more than 21 years. Her presence in the strip had always been, for that matter, strangely hesitant. She was always on the verge of leaving for one reason or another, to the chagrin of Linus. She was first mentioned on October 6, 1959, but soon after she quit her job because she got married to Mr. Hagemeyer, somewhere between February 2, 1960 (when she announced the wedding to the class) and Febuary 15, 1960 (when Linus received a thank you letter from her.) However, she was back to work one year and a half later on September 1, 1961. Another year later, on December 19, 1962, she announced her retirement because she wanted to start “a family of her own.” Yet she was still teaching on January 15, 1965. Finally, she was fired on February 28, 1969, after a strike that had started on February 24, and replaced by Miss Halverson on March 5. Linus’ last thoughts for Miss Othmar, before today, were on March 7, 1969.

Wow, dsukenick, you have great recall …