[I've been
reading]
Women of the Klan: Racism and Gender in the 1920s

A look at women and WKKK activity in Indiana in the 20s. Including interviews with elderly women looking back at their KKK involvement (many with “those were the days” sentiments). Creepy and very well-researched look at how the hate machine works, or worked. The author goes into some detail explaining just why information on some of these groups is hard to find, and just how, in many ways, the groups were simultaneously money-making machines as well as racist hate groups.