- May 1, 1958
- May 2, 1958
- May 3, 1958
- May 4, 1958
- May 5, 1958
- May 6, 1958
- May 7, 1958
- May 8, 1958
- May 9, 1958
- May 10, 1958
- May 11, 1958
- May 12, 1958
- May 13, 1958 (Snoopy first appears as the Fierce Vulture)
- May 14, 1958
- May 15, 1958
- May 16, 1958
- May 17, 1958
- May 18, 1958
- May 19, 1958
- May 20, 1958
- May 21, 1958
- May 22, 1958
- May 23, 1958
- May 24, 1958
- May 25, 1958 (This strip is adapted in A Boy Named Charlie Brown, Charlie Brown's All Stars!, Lucy Must Be Traded, Charlie Brown and Happiness Is a Warm Blanket, Charlie Brown)
- May 26, 1958
- May 27, 1958
- May 28, 1958
- May 29, 1958
- May 30, 1958
- May 31, 1958