Dark Matter is a 2-book series with 2 released primary works first released in 2000 with contributions by W.E.B. Du Bois, Kalamu ya Salaam, Samuel R. Delany, Nalo Hopkinson, Akua Lezli Hope, Charles W. Chesnutt, Octavia E. Butler, Linda Addison, Charles R. Saunders, Nisi Shawl, Steven Barnes, Jewelle L. Gómez, Henry Dumas, Tony Medina, Kiini Ibura Salaam, Robert Fleming, Derrick A. Bell, Darryl A. Smith, Ama Patterson, Walter Mosley, Honorée Fanonne Jeffers, Paul D. Miller, Evie Shockley, Leone Ross, Tananarive Due, Amiri Baraka, Ibi Zoboi, Kevin Brockenbrough, Tyehimba Jess, Jill Robinson, Charles Johnson, Wanda Coleman, Ihsan Bracy, Andrea Hairston, Cherene Sherrard, Pam Noles, David Findlay, Douglas Kearney, Carol Cooper, and Nnedi Okorafor.