- April 1, 1991
- April 2, 1991
- April 3, 1991
- April 4, 1991
- April 5, 1991
- April 6, 1991
- April 7, 1991
- April 8, 1991
- April 9, 1991
- April 10, 1991
- April 11, 1991
- April 12, 1991
- April 13, 1991
- April 14, 1991
- April 15, 1991
- April 16, 1991
- April 17, 1991
- April 18, 1991
- April 19, 1991
- April 20, 1991
- April 21, 1991
- April 22, 1991 (This strip makes an appearance on the bottom left of the back of the 2016 Cra-Z-Art Snoopy Sno-Cone Machine box.)
- April 23, 1991
- April 24, 1991
- April 25, 1991
- April 26, 1991
- April 27, 1991
- April 28, 1991
- April 29, 1991 (This strip is adapted in Lucy Must Be Traded, Charlie Brown)
- April 30, 1991
| ← March 1991 | May 1991 → |