June 6, 1959 (Many of Snoopy's siblings would be introduced later, contradicting this strip's punchline. It can be assumed that Snoopy had forgotten about his siblings, as the future strips show that they live far away from Snoopy)
June 7, 1959
June 8, 1959
June 9, 1959
June 10, 1959 (Linus takes a romantic interest in Sally, a reversal of what would happen later. This strip acknowledges its own year, 1959; as per usual, nothing would happen in 1981.)
