January 1, 1966 (This strip is adapted in Happy New Year, Charlie Brown! )
Jauary 2, 1966
January 3, 1966
January 4, 1966
January 5, 1966
January 6, 1966 (Part of a series of strips that were later reprinted in the booklet Security is an Eye Patch , published by the U.S. Department of Health, Education and Welfare in 1968)
January 7, 1966
January 8, 1966
January 9, 1966 (The first time that Snoopy's doghouse , or the World War I Flying Ace's Sopwith Camel , appears covered in bullet holes This strip is adapted in It's the Great Pumpkin, Charlie Brown )
January 10, 1966
January 11, 1966
January 12, 1966
January 13, 1966
January 14, 1966
January 15, 1966
January 16, 1966
January 17, 1966
January 18, 1966
January 19, 1966
January 20, 1966
January 21, 1966
January 22, 1966
January 23, 1966 (The first time that Snoopy the World War I Flying Ace says, "Curse you, Red Baron !")
January 24, 1966
January 25, 1966
January 26, 1966
January 27, 1966
January 28, 1966
January 29, 1966
January 30, 1966
January 31, 1966