I read the 1st edition of this book many years ago (in the 60s). It well describes the intellectual justifications for racism. It has a wonderful bibliography which allows the reader to find the original material. I have not re-read the book in years, but profoundly recall the author's discussion of how the intellectuals of the time produced literature to justify the US's continue subjagation of non-whites in American and outside--Kipling's "White Man's Burden" being one example. Highly recommended.