For an indepth article on this topic, see Alan Gribben's "'When Other
Amusements Fail": Mark Twain and the Occult'. Collected in THE HAUNTED
DUSK: AMERICAN SUPERNATURAL FICTION, 1820-1920. Edited by Howard Kerr,
John W. Crowley, and Charles L. Crow (University of Georgia Press,
1983).
Barb