SuperSearch is a great place to start for journal articles, books and almost everything else the library has, in one easy to use interface.
For searching with more focus and precision, try one of the databases recommended on this guide.
The HistoryMakers is a growing collection of over 3,000 interviews of African American first person video oral history. By recording the untold personal stories of both well-known and unsung African Americans, The HistoryMakers seeks to preserve and elevate the cultural equity of the African American community.