A Journey to the Centre of the Earth
http://jv.gilead.org.il/vt/c_earth/
An e-text of the novel.
Every Time the Narrator in Jules Verne’s Journey to the Center of the Earth Passes Out
http://the-toast.net/2013/09/20/every-time-narrator-jules-vernes-journey-center-earth-passes/
An amusing page on the narrator's frequent fainting in the text.
Journey to the Centre of the Earth
https://boardgamegeek.com/boardgame/34010/journey-center-earth
A board game based on the novel.
Journey to the Center of Jules Verne… and Us
http://www.fpri.org/article/2001/09/journey-to-the-center-of-jules-verne-and-us/
An article from the Foreign Policy Institute on the author and his work.
Jules Verne: An Author Before His Time?
http://www.unmuseum.org/verne.htm
An amateur-generated but useful page on the author.
8 Jules Verne Inventions That Came True (Pictures)
A National Geographic page on Verne's inventions and their real-life counterparts.