- May 1, 1957
- May 2, 1957
- May 3, 1957
- May 4, 1957
- May 5, 1957
- May 6, 1957
- May 7, 1957
- May 8, 1957
- May 9, 1957
- May 10, 1957
- May 11, 1957
- May 12, 1957
- May 13, 1957
- May 14, 1957
- May 15, 1957
- May 16, 1957
- May 17, 1957
- May 18, 1957
- May 19, 1957 (This strip is adapted in A Boy Named Charlie Brown, Happiness is a Warm Blanket, Charlie Brown and in the segment "The Team" from The Charlie Brown and Snoopy Show episode "Chaos in the Classroom". Two of the adaptations replace Lucy with Patty)
- May 20, 1957
- May 21, 1957
- May 22, 1957
- May 23, 1957
- May 24, 1957
- May 25, 1957
- May 26, 1957
- May 27, 1957 (This strip and the following strip are adapted in Good Grief, Charlie Brown: Peanuts)
- May 28, 1957
- May 29, 1957
- May 30, 1957
- May 31, 1957 (This strip is adapted in A Charlie Brown Christmas. "Rain" is replaced by "Snowstorm".)