"God's Image in Ebony: Series of Biographical Sketches, Facts, Anecdotes With a Brief Sketch of the Anti-slavery Movement in America" by H. G. Adams is a collection of poems and biographies of America's anti-slavery movement's most important figures. Jan Tzatzoe, Andreas Stoffles, and more are honored in this book through their testimonies and descriptions honoring their work. This book was a seminal work to help push forth the idea that slavery was an unnecessary part of civilization.