- December 1, 1959 (This strip and the following two strips are adapted in Good Grief, Charlie Brown: Peanuts)
- December 2, 1959
- December 3, 1959
- December 4, 1959
- December 5, 1959
- December 6, 1959 (This strip is adapted in the segment "Blanket" from The Charlie Brown and Snoopy Show episode "It's That Team Spirit, Charlie Brown")
- December 7, 1959 (This strip is adapted in A Charlie Brown Christmas.)
- December 8, 1959 (This strip is adapted in Good Grief, Charlie Brown: Peanuts, with Lucy replacing Linus)
- December 9, 1959
- December 10, 1959
- December 11, 1959
- December 12, 1959
- December 13, 1959 (This strip serves as the inspiration for the song "Suppertime" from You're a Good Man, Charlie Brown)
- December 14, 1959
- December 15, 1959
- December 16, 1959 (Beethoven's birthday)
- December 17, 1959 (This strip and the following two strips are adapted in the episode "Let it Snow" from the 2014 French TV series Peanuts)
- December 18, 1959
- December 19, 1959
- December 20, 1959 (Lucy references a strip from December 21 1958)
- December 21, 1959 (This strip is adapted in the episode "Let it Snow" from the 2014 French TV series Peanuts)
- December 22, 1959
- December 23, 1959
- December 24, 1959
- December 25, 1959
- December 26, 1959
- December 27, 1959 (This strip is adapted in the segment "Charlie Brown and Lucy" of the 1983 The Charlie Brown and Snoopy Show episode "Snoopy the Psychiatrist")
- December 28, 1959
- December 29, 1959
- December 30, 1959 (This strip is adapted in Good Grief, Charlie Brown: Peanuts)
- December 31, 1959