After the war, while superheroes were marginalized, the comic book industry rapidly expanded and genres such as horror, crime, science fiction and romance became popular.

[6] Particularly in superhero comic books,[7] the art may be divided between: The process begins with the writer (often in collaboration with one or more others, who may include the editor and/or the penciller) coming up with a story idea or concept, then working it up into a plot and storyline, finalizing it with a script.

After the art is prepared, the dialogue and captions are lettered onto the page from the script, and an editor may have the final say (but, once ready for printing, it is difficult and expensive to make any major changes), before the comic is sent to the printer.

Fan art and letters to the editor were commonly printed in the back of the book, until, in the early 21st century, various Internet forums started to replace this tradition.

The "minicomics" form, an extremely informal version of self-publishing, arose in the 1980s and became increasingly popular among artists in the 1990s, despite reaching an even more limited audience than the small presses.

A hardcover book, it reprinted material—primarily the October 18, 1896, to January 10, 1897, sequence titled "McFadden's Row of Flats"—from cartoonist Richard F. Outcault's newspaper comic strip Hogan's Alley, starring the Yellow Kid.

In 1933, salesperson Maxwell Gaines, sales manager Harry I. Wildenberg, and owner George Janosik of the Waterbury, Connecticut, company Eastern Color Printing—which printed, among other things, Sunday-paper comic-strip sections – produced Funnies on Parade as a way to keep their presses running.

[18] These included such popular strips as cartoonist Al Smith's Mutt and Jeff, Ham Fisher's Joe Palooka, and Percy Crosby's Skippy.

Eastern Color neither sold this periodical nor made it available on newsstands, but rather sent it out free as a promotional item to consumers who mailed in coupons clipped from Procter & Gamble soap and toiletries products.

[17] The promotion proved a success, and Eastern Color that year produced similar periodicals for Canada Dry soft drinks, Kinney Shoes, Wheatena cereal and others, with print runs of from 100,000 to 250,000.

[15] Distribution took place through the Woolworth's department-store chain, though it remains unclear whether it was sold or given away; the cover displays no price, but Goulart refers, either metaphorically or literally, to "sticking a ten-cent pricetag [sic] on the comic books".

Distributed to newsstands by the mammoth American News Company, it proved a hit with readers during the cash-strapped Great Depression, selling 90 percent of its 200,000 print, although putting Eastern Color more than $4,000 in the red.

Fledgling publisher Malcolm Wheeler-Nicholson founded National Allied Publications, which would evolve into DC Comics, to release New Fun #1 (Feb. 1935).

The two began their careers with the musketeer swashbuckler "Henri Duval", doing the first two installments before turning it over to others and, under the pseudonyms "Leger and Reuths", they created the supernatural-crimefighter adventure Doctor Occult.

[20] In 1938, after Wheeler-Nicholson's partner Harry Donenfeld had ousted him, National Allied editor Vin Sullivan pulled a Siegel/Shuster creation from the slush pile and used it as the cover feature (but only as a backup story)[21] in Action Comics #1 (June 1938).

Martin Goodman's Timely Comics, also known as Atlas, canceled its three formerly high-selling superhero titles starring Captain America (created by Joe Simon and Jack Kirby), the Human Torch, and the Sub-Mariner, briefly reviving the characters in 1954 only to cancel them again shortly thereafter to focus on horror, science fiction, teen humor, romance and Western genres.

Television had begun to provide competition with comic books, but there was also a rise in conservative values with the election in 1952 of Dwight Eisenhower.

In response to growing public anxiety, the Senate Subcommittee on Juvenile Delinquency held hearings on comic book indecency from April to June 1954.

[38] In 1961, at the demand of publisher Martin Goodman (who was reacting to a surge in sales of National's newest superhero title The Justice League of America), writer/editor Stan Lee and artist/co-plotter Jack Kirby created the Fantastic Four for Atlas, which now re-named itself Marvel Comics.

With an innovation that changed the comic-book industry, Fantastic Four #1 initiated a naturalistic style of superheroes with human failings, fears, and inner demons - heroes who squabbled and worried about the likes of paying the rent.

With dynamic artwork by Kirby, Steve Ditko, Don Heck, and others, complementing Lee's colorful, catchy prose, the new style became very popular among teenagers and college students who could identify with the angsty and irreverent nature of characters like Spider-Man, Hulk, X-Men and Fantastic Four.

This was a time of social upheaval, giving birth to a new generation of hip and more counter-cultural youngsters, who found a voice in these books.

[42] What had started as a self-publishing scene soon grew into a minor industry, with Print Mint, Kitchen Sink, Last Gasp and Apex Novelties among the more well-known publishers.

In the mid-to-late 1980s, two series published by DC Comics, Batman: The Dark Knight Returns and Watchmen, had a profound impact upon the American comic-book industry.

Their popularity, along with mainstream media attention and critical acclaim, combined with changing social tastes, led to a considerably darker tone in comic books during the 1990s nicknamed by fans as the "grim-and-gritty" era.

This tendency towards darkness and nihilism was manifested in DC's production of heavily promoted comic book stories such as "A Death in the Family" in the Batman series (in which The Joker brutally murdered Batman's sidekick Robin), while at Marvel the continuing popularity of the various X-Men books led to storylines involving the genocide of superpowered "mutants" in allegorical stories about religious and ethnic persecution.

In addition, published formats like the graphic novel and the related trade paperback enabled the comic book to gain some respectability as literature.