Books on African American history use the Library of Congress system and we arrange the book on the 3rd floor under
E 184 -- 185.95 Elements in the population
E 184.5 -- 185.98 Afro-Americans
E185.2 -- 185.89 Status and development since emancipation
E 185.96 -- 185.98 Biography. Genealogy
Check the call numbers for Selected New Books: African American-related research can appear under other Library of Congress classifications.