Question: Anna Riva (1922–2003) was the pen name of who, a well-known American occult author and manufacturer of Hoodoo spiritual supplies, a traditional African American folk spirituality that developed from a number of West African spiritual traditions and beliefs? 
Sentence (from "Hoodoo (folk magic)"): African American Hoodoo (also known as "conjure", "rootworking", "root doctoring", or "working the root") is a traditional African American folk spirituality that developed from a number of West African spiritual traditions and beliefs.
Relevant evidence: Yes