Comic-Con International: San Diego began in 1970 when a group of comics, movie, and science fiction fans banded together to put on the first comic book convention in southern California. Comic-Con started as a one-day “minicon,” called San Diego’s Golden State Comic-Minicon, on March 21, 1970 at the U.S. Grant Hotel in downtown San Diego. The purpose of this single-day event—which included two special guests, Forrest J Ackerman and Mike Royer, and drew about 100 attendees—was to raise funds and generate interest for a larger convention.

The success of the minicon led to the first full-fledged, three-day San Diego Comic-Con (called San Diego’s Golden State Comic-Con), held August 1–3, 1970, at the U.S. Grant Hotel, with guests Ray Bradbury, Jack Kirby, and A. E. van Vogt. Read more at Comic-con’s official website.

Additionally, you might LA  Times’ synopsis of Every year of Comic-Con in one giant timeline interesting.  Recordings of the 1970 San Diego Comic-Con are available here and you can watch Cinema Blend’s The History Of San Diego Comic-Con In Just 4 Minutes below.

You may also be interested in finding out these 31 Facts about San Diego Comic-Con and reading the following articles:

However, San Diego is not just about Comic-con. This city has much more to offer. Find out all about  this wonderful city at San Diego Tourism Authority.