When this was new, in 1965 or 1966 (I can’t quite make the date out — though the 6/16 at lower left is quite clear, as the pigeons have not yet picked it up), probably it was already a challenge to the reader to recognize some already-retro references, to famous real-world couples or other cartoon-world characters. And probably some randomly tossed-in names; and probably some not-famous real-world friends of Mort Walker’s; and certainly some pairing-up jokes (Emmy and Oscar?).
And after the passage of another 55 or 56 years, how many of them can we get? I’m not really much of a comics historian, so maybe … none? But others may do better.