American direct voice medium (1874-1947), noted in particular for a variety of foreign languages heard during sittings, but viewed with suspicion by some investigators.

Non-profit research organization based in Tucson, Arizona, dedicated to the rigorous scientific study of mental mediums (people who claim regular communication with the deceased).

American direct-voice medium (1859-1942) of considerable power, according to observers who attended sittings in the US and Britain. 

Popular Brazilian medium (1910-2002) celebrated for his prolific output of poetry, fiction and Spiritist philosophy, which he said was dictated to him by discarnate spirits.