Gaines informed Siegel that McClure had rejected Superman, and asked if he could forward their Superman strips to Liebowitz so that Liebowitz could consider them for Action Comics. Siegel agreed.Exact sales figures for the early decades of Superman comic books are hard to find because, like most publishers at the time, DC Comics concealed this data to deny competitors, but given the general market trends at the time, sales of Action Comics and Superman probably peaked in the mid-1940s and thereafter steadily declined.
Siegel and his fellow writers had developed the character with little thought of building a coherent mythology, but as the number of Superman titles and the pool of writers grew, Weisinger demanded a more disciplined approach. Black Superman Costume After Shuster left National, Wayne Boring succeeded him as the principal artist on Superman comic books.Writer John Byrne rewrote the Superman mythos, again reducing Superman’s powers, Champion of Cosplay which writers had slowly re-strengthened, and revised many supporting characters, such as making Lex Luthor a billionaire industrialist rather than a mad scientist, and making Supergirl an artificial shapeshifting organism because DC wanted Superman to be the sole surviving Kryptonian.
It was 143 minutes long and was made on a budget of $55 million (equivalent to $216,000,000 in 2019). It is the most successful Superman feature film to date in terms of box office revenue adjusted for inflation. The first adaptation of Superman beyond comic books was a radio show, The Adventures of Superman, which ran from 1940 to 1951 for 2,088 episodes, most of which were aimed at children.