Alice's Adventures in Wonderland is written by a mathematician Lewis Carroll, in 1865. Its sequel, Through The Looking Glass, is written in 1871. For more info about this work, see Wikipedia: Alice's Adventures in Wonderland.
The textual annotation on the side are notes by Xah Lee (me). Mostly they are with respect to English (vocabulary and usage), mathematics, or ethology.
The digital source of Alice In Wonderland is based on alice30h.htm of http://www.gutenberg.org/etext/11, retrieved on 2005-11. The digital source of Through The Looking Glass is based on http://etext.library.adelaide.edu.au/c/carroll/lewis/looking/index.html, retrieved on 2006-02. The HTML has been completely redone for both.
If you are looking for a printed book, i recommend: The Annotated Alice (annotated by Martin Gardner) amazon.