Superman Batman Comics book Vol. 74
Superman continued to be the most successful character in comics through this period. His solo book quickly went from being a quarterly to a bi-monthly, and he would also get the lead slot in World's Finest Comics, a follow-up to the New York World's Fair specials, that would feature both Superman and Batman.
Every story is credited to Siegel and Shuster, but this is blatantly untrue. Shuster stayed with the strip longer than he did on any of his other creations, but the sheer volume of Superman stories necessitated bringing on other artists. Some were definitely of lesser ability, but by far these men did a much better job of keeping the look and feel of the series. Wayne Boring would have the greatest influence, under his pen Superman's crest would take on its "normal" shape, but Jack Burnley executed some beautiful stories as well.
Aside from occasional mentions of Krypton in the opening blurbs, nothing more is shown or mentioned about Superman's background. We learn in one story that he has no living relatives, but we have yet to learn anything about the Kents. We do get to see Clark's apartment in Metropolis a few times, though it has little distinguishing character. The most notable thing we learn about Clark is that he has a massive clock collection. This proves to be of significance in Action 73, " The Hobby Robbers, " but is never mentioned again. The curious justification for his collection is that he is fascinated by clocks because time seems to stand still when he moves at super-speed.