ENCYCLOPEDIA OF SURFING INC is a Seattle-based nonprofit organization dedicated to researching, archiving, and presenting surf history and culture. The book version of EOS, written by Matt Warshaw, was published in 2010. The EOS website, which includes Warshaw's 2010-book History of Surfing, launched in 2013, just after EOS became a California-registered 501(c)3. In 2016, EOS switched to a subscription-based model.Encyclopedia of Surfing has no advertising or corporate funding and is designed for casual surf fans as well as researchers, writers and reporters. Apart from the website itself, EOS' main objective is to gather, digitize, keyword, and archive surf media in all forms, including books, magazines, films, and videos. EOS' weekly Sunday Joint email newsletter keeps subscribers up to date with recent activity.