Although Edwin A. Abbott's essay "Flatland" is readily available on the internet, I failed to find a nicely typeset version. At this time, the rendering quality of internet browsers doesn't come anywhere near the quality of a nice book.
For these reasons, as well as a healthy portion of boredom, I made the version of "Flatland" you are currently reading, in LaTeX. The LaTeX source can be found on https://github.com/Ivesvdf/flatland (feel free to make issues or send me pull requests when you find bugs or have improvements). It should also be fairly easy --- a matter of minutes --- to produce a book-sized version, ready to send to a printer.