TMTH&M summarizes the publication of MT's first book.
"A Life Lived in a Rapidly Changing World: Samuel L. Clemens, 1835-1910," Biography of Mark Twain, The Mark Twain House and Museum, August 14, 2010, accessed June 18, 2021
He quickly signed up for a steamship tour of Europe and the Holy Land. His travel letters, full of vivid descriptions and tongue-in-cheek observations, met with such audience approval that they were later reworked into his book, The Innocents Abroad in 1869.