This addendum is designed to compensate for Altick's omission of materials by or about black writers in "The Art of Literary Research" and to identify some of the most outstanding public, university, and private library holdings in the United States on American blacks, as well as major Afro-American collections. Major public library holdings include the Schomburg Center for Research in Black Culture and special collections of the New York Public Library of the Performing Arts and the Library of Congress, as well as a number of collections held by other public libraries, state historical societies, and archives. Although the largest and most extensive university collection on American blacks is held by the Moorland-Spingarn Research Center at Howard University, other important holdings are located at Fisk University, the Trevor-Arnett Library at Atlanta University, Yale University Library, the Amistad Research Center archives at Dillard University, the Morris A. Soper Library of Morgan State College, and Tuskegee Institute; several other American universities also hold significant collections. Finally, many valuable collections are held in the private libraries of families and friends of the writers; some private collections have evolved into institutions themselves. A listing of major libraries that maintain collections of noted Afro-American figures includes the names and addresses of 16 institutions. (KM)