- September 1, 1970 (This strip is adapted in the episode "Leave Me in Peace" from the 2014 French TV series Peanuts)
- September 2, 1970
- September 3, 1970 (This strip is adapted in A Charlie Brown Celebration)
- September 4, 1970
- September 5, 1970 (This strip is adapted in A Charlie Brown Celebration)
- September 6, 1970 (This strip is adapted in A Charlie Brown Celebration and the 1988 TV special, Snoopy!!! The Musical)
- September 7, 1970
- September 8, 1970 (This strip is adapted in A Charlie Brown Celebration)
- September 9, 1970
- September 10, 1970
- September 11, 1970
- September 12, 1970
- September 13, 1970
- September 14, 1970
- September 15, 1970
- September 16, 1970
- September 17, 1970
- September 18, 1970
- September 19, 1970
- September 20, 1970
- September 21, 1970
- September 22, 1970
- September 23, 1970 (This strip is adapted in the segment "Football" of the 1983 The Charlie Brown and Snoopy Show episode "Chaos in the Classroom")
- September 24, 1970
- September 25, 1970
- September 26, 1970
- September 27, 1970
- September 28, 1970 (This strip is adapted in Play It Again, Charlie Brown)
- September 29, 1970 (This strip is adapted in the video game Where's the Blanket, Charlie Brown?)
- September 30, 1970
