| | * Goldberg, Robert Alan. ''Hooded Empire: The Ku Klux Klan in Colorado.'' (1981). | | * Goldberg, Robert Alan. ''Hooded Empire: The Ku Klux Klan in Colorado.'' (1981). |
| | * Horn, Stanley F. ''Invisible Empire: The Story of the Ku Klux Klan, 1866-1871'', (1939) | | * Horn, Stanley F. ''Invisible Empire: The Story of the Ku Klux Klan, 1866-1871'', (1939) |
| − | ::Horn, born in 1889, was a Southern historian who was sympathetic to the first Klan, which, in a 1976 oral interview<ref>http://www.lib.duke.edu/forest/Research/ohisrch.html</ref>, he was careful to distinguish from the later "spurious Ku Klux organization which was in ill-repute—and, of course, had no connection whatsoever with the Klan of Reconstruction days." | + | ::Horn, born in 1889, was a Southern historian who was sympathetic to the first Klan, which, in a 1976 oral interview,<ref>http://www.lib.duke.edu/forest/Research/ohisrch.html</ref> he was careful to distinguish from the later "spurious Ku Klux organization which was in ill-repute—and, of course, had no connection whatsoever with the Klan of Reconstruction days." |
| | * Jackson, Kenneth T. ''The Ku Klux Klan in the City, 1915-1930.'' (1992) | | * Jackson, Kenneth T. ''The Ku Klux Klan in the City, 1915-1930.'' (1992) |
| | * MacLean, Nancy. ''Behind the Mask of Chivalry: The Making of the Second Ku Klux Klan.'' (1994) | | * MacLean, Nancy. ''Behind the Mask of Chivalry: The Making of the Second Ku Klux Klan.'' (1994) |