BiblioVault may have an electronic file which would meet your requirements for this title:
The Last "Darky": Bert Williams, Black-on-Black Minstrelsy, and the African Diaspora
Louis Chude-Sokei
Paper: 978-0-8223-3643-3
Cloth: 978-0-8223-3605-1
Electronic: 978-0-8223-8706-0