Spate, Oskar Hermann Kristian
Australia, New Zealand and the Pacific
Oxford University Press, 1965
 Buku Teks
Grant, Douglas
Mark Twain
Grove Press, 1962
 Buku Teks
Neider, Charles
The Autobigraphy of Mark Twain
NY. Harper & Brothers
 Buku Teks
Twain, Mark, 1835-1910
The Original Illustrated Mark Twain
Castle Books, 2011
 Buku Teks
Mark Twain letters to mary
edited with a commerntary by Lewis G. Leary
Columbia University Press, 1961
 Buku Teks