This was somewhat of an excuse to bring up
The Gutenberg Project, which is a marvelous effort to bring out of print books back to life. The project has 39,000 free books to date, all copyright free. And free - as in free!
Travels was first posted as a WITWHH puzzle, and (little secret here) is also a clue for
What In The World Happened Here? CXXXII (132).