Two of my favorites are from the 19th century
The Wonderful Ride by George Loher, Harper and Row, 1978
Wheels of Chance by H.G. Wells, Breakaway Books. Very funny fictional account of touring by THE H.G. Wells
And for on-line content there is always
http://www.crazyguyonabike.com/. Lots of good stuff there. I'm told that one guy's stuff is really funny but I know the author personally and I think his stuff is dreck