September 1, 1966
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September 2, 1966
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September 3, 1966
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September 4, 1966
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September 5, 1966 (In the third panel Peppermint Patty's glove appears to be transparent)
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September 6, 1966
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September 7, 1966
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September 8, 1966
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September 9, 1966
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September 10, 1966
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September 11, 1966 (The last four panels are adapted in You're in Love, Charlie Brown)
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September 12, 1966
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September 13, 1966
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September 14, 1966
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September 15, 1966
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September 16, 1966
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September 17, 1966
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September 18, 1966 (A rare instance of an adult being given a speech bubble in a 1960s strip)
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September 19, 1966 (Beginning of a storyline in which Snoopy's doghouse burns down, this is also the third time it was destroyed. It was destroyed for the first time on July 26, 1959 and for the second time on February 13, 1960)
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September 20, 1966
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September 21, 1966
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September 22, 1966
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September 23, 1966
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September 24, 1966
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September 25, 1966 (Football gag for 1966)
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September 26, 1966
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September 27, 1966
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September 28, 1966
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September 29, 1966
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September 30, 1966
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← August 1966 October 1966 →
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