[3] Campbell collaborated with Susan Smulyan of Brown, and Ernie Limbo of Tougaloo College in creating the "Freedom Now!"
[4] In a review for The New York Times, Campbell's 2006 work Middle Passages is described by Raymond Arsenault as an "episodic book of interlocking stories" that explores the complex and often bittersweet experiences of African Americans who journeyed to Africa over two centuries.
The reviewer praises Campbell's engaging narrative and his ability to illuminate the complexities of national identity and race through the stories of a diverse cast of characters.
The review highlights Campbell's balanced approach, noting that he avoids romanticizing Africa or its visitors and instead presents a nuanced portrait of the continent and its relationship with African Americans throughout history.
Arsenault also focuses on Campbell's description of Langston Hughes, stating: "As Campbell later shows in an informative chapter on Africa and the Harlem Renaissance, Hughes managed to recover from his initial disappointment [at being perceived as white by the Africans he encountered], adopting a more realistic appreciation of the limitations of both his 'African' identity and African virtue.