Use NUsearch, Northwestern University Library's catalog, to find books, documents, video, sound recordings, and other items across both the Evanston and Chicago campus libraries of Northwestern University.
Keyword search: race and renaissance
(race and renaissance) not harlem
or if you want to get really sophisticated:
(race or racial or racism) and ("17th century" or "16th century" or renaissance) and (literature or drama or theat?)
Subject Heading search: race in literature
England -- race relations