Informazioni sulla fonte
Ancestry.com. An authentic history of the Douglass monument [database online]. Provo, UT: Ancestry.com Operations Inc, 2005.Dati originali: Thompson, J. W.. An authentic history of the Douglass monument : biographical facts and incidents in the life of Frederick Douglass, his death at Anacosta, D.C., and funeral at Washington, D.C., and Rochester, N.Y., together with portraits and illustrations of important incidents of the four years' struggle to complete the work. Rochester, N.Y.: Rochester Herald Press, 1903.