- January 1, 1973
- January 2, 1973
- January 3, 1973
- January 4, 1973
- January 5, 1973
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- January 6, 1973
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- January 7, 1973 (Poochie's only appearance in the strip. End of a series of Sunday strips about the character which began on December 17, 1972)
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- January 8, 1973
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- January 9, 1973
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- January 10, 1973
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- January 11, 1973
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- January 12, 1973
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- January 13, 1973
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- January 14, 1973 (This strip is adapted in It's Flashbeagle, Charlie Brown)
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- January 15, 1973
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- January 16, 1973
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- January 17, 1973
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- January 18, 1973
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- January 19, 1973
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- January 20, 1973 (This strip is adapted in the segment "Football" of the 1983 The Charlie Brown and Snoopy Show episode "Chaos in the Classroom")
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- January 21, 1973
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- January 22, 1973
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- January 23, 1973
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- January 24, 1973
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- January 25, 1973
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- January 26, 1973
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- January 27, 1973
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- January 28, 1973
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- January 29, 1973
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- January 30, 1973
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- January 31, 1973
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| ← December 1972 | February 1973 → |
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