Sierra, Ralph U(son) (1904-1982)

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Sierra, Ralph U(son) (1904-1982)

Chiropractic doctor who conducted research in parapsychology. Sierra was born December 6, 1904, in San Juan, Puerto Rico, and graduated from Atlantic States Chiropractic Institute of New York. He was a physical therapist at Kings County Hospital, Brooklyn, New York (1935-47), an instructor in neurology at Atlantic States Chiropractic Institute (1947-49), and a lecturer on healing and natural sciences. He wrote the Handbook of Neurology, a chiropractic text. Sierra investigated respiratory and diaphragmatic changes in mediums during manifestation of phenomena. He died in November of 1982.


Pleasants, Helene, ed. Biographical Dictionary of Parapsychology. New York: Helix Press, 1964.

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