Grant, Douglas
Mark Twain
Grove Press, 1962
 Buku Teks SO
The Autobigraphy of Mark Twain
NY. Harper & Brothers
 Buku Teks
Smith, Henry Nash
Mark Twain: the development of a writer
Belknap Press of Harvard University Press, 1967
 Buku Teks
Twain, Mark, 1835-1910
The Original Illustrated Mark Twain
Castle Books, 2011
 Buku Teks
Twain, Mark, 1835-1910
Mark Twain in Australia and New Zealand
Penguin Books, 1973
 Buku Teks