- May 1, 1955
- May 2, 1955 (The next six strips form the first story arc to run through a complete week of daily strips; its ongoing theme is based on a gag recycled from the Li'l Folks strip from May 1, 1949.)
- May 3, 1955
- May 4, 1955
- May 5, 1955
- May 6, 1955
- May 7, 1955
- May 8, 1955
- May 9, 1955
- May 10, 1955 (Shermy's first lines since May 3, 1954)
- May 11, 1955
- May 12, 1955
- May 13, 1955
- May 14, 1955
- May 15, 1955
- May 16, 1955
- May 17, 1955
- May 18, 1955
- May 19, 1955
- May 20, 1955
- May 21, 1955
- May 22, 1955 (This strip is loosely adapted in Charlie Brown's All-Stars)
- May 23, 1955
- May 24, 1955
- May 25, 1955
- May 26, 1955
- May 27, 1955
- May 28, 1955
- May 29, 1955
- May 30, 1955
- May 31, 1955 (The first indication of Linus suffering withdrawal symptoms from being deprived of his security blanket)
| ← April 1955 | June 1955 → |
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