Grant became a part of popular culture in 1920s America. Author F. Scott Fitzgerald made a lightly disguised reference to Grant in "The Great Gatsby". Tom Buchanan was reading a book called "The Rise of the Colored Empires" by "this man Goddard", a combination of Grant and his colleague Lothrop Stoddard. (Grant wrote the introduction to Stoddard's book "The Rising Tide of Color Against White World-Supremacy".) "Everybody ought to read it", the character explained. "The idea is if we don't look out the white race will be — will be utterly submerged. It's all scientific stuff; it's been proved."