April 1, 1957 April 2, 1957 April 3, 1957 April 4, 1957 April 5, 1957 April 6, 1957 April 7, 1957 (This strip is adapted in Happiness Is a Warm Blanket, Charlie Brown April 8, 1957 April 9, 1957 April 10, 1957 April 11, 1957 April 12, 1957 April 13, 1957 (This strip is one of many adapted into the few minutes of animated segments in the TV Documentary of "A Boy Named Charlie Brown" from 1963.) April 14, 1957 April 15, 1957 April 16, 1957 April 17, 1957 April 18, 1957 April 19, 1957 April 20, 1957 April 21, 1957 April 22, 1957 April 23, 1957 April 24, 1957 April 25, 1957 April 26, 1957 April 27, 1957 April 28, 1957 (This strip is adapted in It's Arbor Day, Charlie Brown April 29, 1957 April 30, 1957
