Anybody know what publishing event is supposed to inaugurate the Silver Age?
Typically,
Showcase#4 (1st appearance of Barry Allen as The Flash) is cited is as the beginning of the Silver Age, but... before him there was the Martian Manhunter in
Detective Comics #225 (Nov. 1955), and before J'onn J'onzz there was Captain Comet in
Strange Adventures #9 (June 1951), lasting until
Strange Adventures #46 (July 1954). After that, Captain Comet didn't make another appearance until 1976, so some would argue that he sat out the Silver Age.
Personally, my rule of thumb in defining the Silver Age is that it began with the first Comics Code Authority-approved comic books (so let's just say 1955), and ended in 1972, when the CCA was revised in the wake of the Marvel-published drug storyline in
Amazing Spider-Man. To me, that just makes much more sense than trying to tie the beginning (or ending) of an "Age of Comics" to the appearance (or disappearance) of some specific character because the superhero genre has always traditionally dominated the collector hobby, and that influences the thinking behind these things. Barrry Allen's first appearance in
Showcase really isn't comparable to Superman's in
Action Comics #1.
So if you go by the CCA as the dividing line between Ages, then I guess Martian Manhunter would be the first code-approved superhero to make his debut (all Captain Comet's stories appeared pre-Code). Except... the early MM stories weren't really traditional superhero stories as such. J'onn J'onzz didn't appear in public in costume; he worked covertly in his adopted Earthman guise of detective John Jones, so it was either a science fiction feature with a detective slant, or a detective feature with a science fiction slant, depending on how you wanted to look at it. Right in line with
Detective's editorial policy at the time. Science fictional tropes were popular in the Superman titles, and it was hoped that a little injection of SF tropes might help boost sales of
Batman and
Detective as well. But Manhunter From Mars only became superhero-y later, after Barry Allen had sort of made superheroes respectable again.
Better not to worry about individual characters, then, and just look at something like the CCA which affected the industry broadly as a whole, even if a few publishers like Gilberton and Dell managed to remain relatively unaffected.
Harvey's Blonde Bomber and Girl Commandos are superheroes? Well, if you think so (not by my reckoning). But I don't think DC's Boy Commandos (or the Newsboy Legion) were superheroes either. To each his own, I guess. Was Pat Parker, War Nurse on the list? At least she had a costume and mask, unlike her Girl Commandos. How about Merry, Girl of 1000 Gimmicks? Or Marga the Panther Woman? The latter might sound more like a jungle girl, but she's got actual superpowers, as the result of a science experiment.
Can't always go by what
sounds like it should be a superhero, though... Blonde Bomber sounds like she
should be a superhero, but "ace newsreel reporter Honey Blake" had no mask, no costume, no secret identity, and no super-powers. As far as I can recall, no one in the stories actually refers to her as the Blonde Bomber, either. The initial story claims she's "an expert chemist", but she never actually makes any use of that knowledge, contrary to what you'd expect. She's not actually bombing anybody, or blowing anything up. She's pretty good with her fists, though.