December 18, 1966 (In saying, "Like I've said before", Linus appears to be referring to the 1965 TV special A Charlie Brown Christmas)
December 19, 1966
December 20, 1966 (This strip and following skating strips are possibly adapted in A Boy Named Charlie Brown. The strip is almost identical to the one from January 24, 1966.)
December 21, 1966
December 22, 1966 (This strip is adapted in the segment "Season's Greetings from Sally" of the 2002 special Charlie Brown's Christmas Tales)
December 23, 1966
December 24, 1966 (This strip is adapted in the segment "Season's Greetings from Sally" of the 2002 special Charlie Brown's Christmas Tales)
December 25, 1966 (This strip is adapted in the episode "Even the Score" from the 2014 French TV series Peanuts)