Authors are (Clockwise from upper left):
Toni Morrison
Leslie Marmon Silko
Edward Albee
Gerald Vizenor*
John Muir
Plato
Louise Erdrich
Maxine Hong Kingston
Virginia Woolf
Samuel Beckett
Dorothy Allison
Frederick Douglass
Gwendolyn Brooks
Monique Wittig**
Christopher Marlowe
William Shakespeare
* Photo courtesy of the author's official
website
**Photo courtesy of the University of Arizona website