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.