Albert Bigelow Paine (1861-1937) was an American author and biographer best known for his work with Mark Twain. He was a member of the Pulitzer Prize Committee and wrote in several genres, including fiction, humour, verse, travel books, and stories for children. Paine had a long association with Mark Twain (Samuel Clemens), lived and travelled with him for four years, and acted as his literary executor, arranging for the publication of Mark Twain's Letters (1917). He wrote The Boy's Life of Mark Twain (1916), and A Short Life of Mark Twain (1920), but his outstanding work was his 4-volume biography, subtitled The Personal and Literary Life of Samuel Langhorne Clemens, published in 1912. Volume 1, Part 2 covers the period 1866-75, during which Twain travelled to the Holy Land and later to England, lectured widely, published The Innocents Abroad and Roughing It, courted and married Olivia (Livy) Langdon, and started work on Tom Sawyer.