February: National Allied Publications published New Fun Comics, which was the first comic book to contain wholly original material rather than reprints of newspaper comic strips. The series would go on to debut the characters Doctor Fate, Aquaman, Green Arrow, and The Spectre.
December:New Comics, which would be retitled to New Adventure Comics and then Adventure Comics, debuted from National Allied Publications. The series would later feature the debuts of Hourman, Sandman, Starman, and Jack Kirby's Manhunter.
March:National Comics Publications begins publication of Detective Comics. Batman would debut in issue #27, National became so well known for the series that they changed their name to DC Comics, and the series would run continuously until 2011, becoming the longest continuously published comic series in American history.
June:National Comics Publications publishes Action Comics #1, the first appearance of Superman. The comic launched the superhero industry and along with company title Detective Comics, became one of the longest running comic book titles, with continuous publication since 1938 (with a minor gap from 2011-2016).