- April 2, 1951
- April 3, 1951
- April 4, 1951 (Patty's 100th appearance) The 100th strip
- April 5, 1951
- April 6, 1951
- April 7, 1951
- April 9, 1951
- April 10, 1951
- April 11, 1951
- April 12, 1951
- April 13, 1951
- April 14, 1951
- April 16, 1951
- April 17, 1951
- April 18, 1951
- April 19, 1951
- April 20, 1951
- April 21, 1951
- April 23, 1951
- April 24, 1951
- April 25, 1951 (The first reference to golf)
- April 26, 1951
- April 27, 1951 (The first time that someone blushes)
- April 28, 1951
- April 30, 1951
| ← March 1951 | May 1951 → |