- May 1, 1956 (The first time that Schroeder forces Lucy off his piano)
- May 2, 1956
- May 3, 1956 (Snoopy's lion ego in this strip is adapted in A Boy Named Charlie Brown.)
- May 4, 1956
- May 5, 1956
- May 6, 1956
- May 7, 1956
- May 8, 1956 (This strip and the following strip are adapted in Good Grief, Charlie Brown: Peanuts)
- May 9, 1956
- May 10, 1956
- May 11, 1956
- May 12, 1956
- May 13, 1956
- May 14, 1956
- May 15, 1956
- May 16, 1956
- May 17, 1956 (This strip is adapted in Good Grief, Charlie Brown: Peanuts, with Lucy replacing Linus)
- May 18, 1956
- May 19, 1956 (Patty dosen't appear again until July 11, 1956)
- May 20, 1956
- May 21, 1956 (Strip format change: the panels become slightly taller, and the title no longer appears in quotes in the label)
- May 22, 1956
- May 23, 1956
- May 24, 1956
- May 25, 1956
- May 26, 1956
- May 27, 1956
- May 28, 1956
- May 29, 1956
- May 30, 1956
- May 31, 1956