What are Underground Comic Books?

In the late 1960s and early 1970s, there was a surge of creativity evidenced in what came to be called underground comics. These comics were published and distributed independently of the established comics industry, and most titles reflected the youth counter-culture and drug culture of the time. Many were notable for their uninhibited, often irreverent style; the frankness of their depictions of nudity, sex, profanity, and politics had not been seen in comics outside of their precursors, the pornographic and even more obscure "Tijuana bibles." Underground comics were almost never sold at news stands, but rather in such youth-oriented outlets as head shops and record stores, as well as by mail order.
The underground comics movement is often considered to have started with Zap Comix #1 (1968) by cartoonist Robert Crumb, a former greeting-card artist from Cleveland who had moved to San Francisco. Crumb later created the characters Fritz the Cat and Mr. Natural, and published Gilbert Shelton's The Fabulous Furry Freak Brothers. This blog brought to you by http://www.thecollectorsbay.com/Comic-Books,category,1889,parent_id,categories