You will find that The Catcher in the Rye has been covered extensively in eNotes for years. You can get a wealth of information about every aspect of the novel by clicking onto the Popular Links and Top Tags in the topic The Catcher in the Rye. There have also been many books written about J.D. Salinger, and some of these should be available in your college library. Check the bibliography in the back. You can also refer to Book Review Digest in the reference department, using the volume for the year in which the novel was published and the year after that. Book Review Digest should refer you to reviews of The Catcher in the Rye in the New York Times, which is an excellent source of book reviews.