Secondary sources often analyze primary sources to argue/ support a thesis statement.
Secondary sources interpret the significance or meaning of a historical event or phenomenon, person, a movement, or place.
Secondary sources are often created by someone not present when the event took place or removed from the event.
Secondary sources are produced and disseminated in various formats, including books, scholarly journal articles, conference proceedings, dissertations, documentaries, and reference works.
Oxford African American Studies Center
Despite its name, a great source of overview articles on Africa and the African Diaspora generally as well as the African American experience