I'm currently listening to a compilation album of the Kinks (and transcribing some of them), and I noticed something about "Where Have All the Good Times Gone." The first line in the last verse is "Well, yesterday was such an easy game for you to play." I'm pretty sure this is a reference to the Beatles' "Yesterday" and its lines "Yesterday / Love was such an easy game to play."
The chronology works out. The index of release dates in Mark Lewisohn's The Complete Beatles Recording Sessions lists the release date of the Help! album (with "Yesterday") as 6 August 1965, and the liner notes to the deluxe edition of The Kink Kontroversy list the release date of the "Till the End of the Day" b/w "Where Have All the Good Times Gone" single as 19 November 1965.