Little known David Duke fact… from Wikipedia (so please use a liberal definition of the word “fact”)

In 1976 Duke published a women’s self-help book titled Finders-Keepers to raise money. He used the pseudonym Dorothy Vanderbilt. The book includes advice on vaginal exercises, fellatio, and anal sex. The book is out of print and difficult to find; however, a New Orleans newspaper, The Times-Picayune, managed to obtain a copy and traced its proceeds to Duke. He compiled the information from women’s self-help magazines.