The Congo Reform Association had the support of famous writers such as Joseph Conrad (whose "Heart of Darkness" was inspired by a voyage to the Congo Free State), Anatole France, Nobel laureates Bjørnstjerne Bjørnson and John Galsworthy, Sherlock Holmes creator Arthur Conan Doyle, civil rights activist Booker T. Washington, and Mark Twain. Conan Doyle wrote "The Crime of the Congo" in 1908, while Twain gave the most famous contribution with the satirical short story "King Leopold's Soliloquy". Conrad and Ford Madox Ford also included a devastating parody of Leopold II in their cowritten novel "The Inheritors".