Hepcat

Tales to Astonish when it was still really good before the Big Change:

Hotshot Charlie should of course be mentioned:

Molten Man to Volcano Men:

Kitties could drop in on just about any title:

Journey into Mystery to House of Mystery:

Five of my Daffy comics: 4 13 15 16 17

Horsies in Batman!

Five more of my Adventures of the Jaguar: 6 7 8 9 10

A doctor that's a doggy! How cool is that?

Another unique title:

Interesting! So that issue was printed with a different back cover in Canada. That then gives you even more to collect!

No. That's also the November 1950 issue #109 of the regular run of Looney Tunes and Merrie Melodies.

Some Dell Felix the Cat comics: 4 5 6

To the very first actual superhero wedding:

To another love triangle involving a hot redhead:

Five more of my Detective Comics: Northland copy

Five more of my Action Comics:

Perhaps my only comic from the Winnipeg collection:

War, you say you want war? Here then, let me give you real hardcore war! 2 4

Not "what" but "who", the who being the typical ten year old enticed to learn why Krypto was delivering the mail. We're talking about covers, not storylines though. I've waxed eloquent about Marvel's competitive strengths, i.e. Stan Lee, in other places such as here: The covers though were not among Marvel's strengths in the early to mid 1960's. It was the covers that attracted me to DC comics in 1962 and kept me buying DCs until 1965. DC covers were slick. Marvels (and Charltons) looked low-end-of-the-market in comparison.

Deputy Dawg was a smash hit for Terrytoons circa 1960: 1 2 3 4 5

New Comics is the one that leaped right out at me!

Here are five more of the Atom comics from my collection:

Another great duo from Hanna-Barbera 3

Here's the Canadian White variant of Looney Tunes and Merrie Melodies 109 from my collection: