April 1, 1964 (This strip is adapted as the segment "April Fool" in Peanuts Motion Comics)
April 2, 1964
April 3, 1964
April 4, 1964 (This strip is adapted as the segment "A Fall Rain" in Peanuts Motion Comics)
April 5, 1964
April 6, 1964
April 7, 1964 (This strip and the following four strips are adapted as the segment "Mother's Day" in Peanuts Motion Comics. This is 3 and 4's penultimate appearance. They do not appear again until October 20, 1968. This is also "Pig-Pen's" only appearance of 1964.)
April 13, 1964 (Beginning of a storyline that was later used as the segment "The Science Project" in Peanuts Motion Comics and in the episode "Leave Me in Peace" from the 2014 French TV series Peanuts and used on the page for December 14 of the Dayspring Peanuts: A Year's Worth of Smiles and Blessings Desk Calendar)
April 14, 1964
April 15, 1964
April 16, 1964
April 17, 1964
April 18, 1964 (Ending of a storyline that was later used as the segment "The Science Project" in Peanuts Motion Comics and in the episode "Leave Me in Peace" from the 2014 French TV series Peanuts)
April 19, 1964 (This strip is adapted as the segment "I'm New At It" in Peanuts Motion Comics and in the episode "Just for Love" from the 2014 French TV series Peanuts)
April 20, 1964 (This strip and the following strip are adapted as the segment "I'm New At It" in Peanuts Motion Comics)
