Jennifer Delton . Racial Integration in Corporate America, 1940–1990 . New York : Cambridge University Press . 2009 . Pp. vi, 313. Cloth $80.00, paper $24.99. Robert E. Weems Jr . Business in Black and White: American Presidents and Black Entrepreneurs in the Twentieth Century . With Lewis A. Randolph . New York : New York University Press . 2009 . Pp. x, 313. $50.00.