Scientology Foundation of Personnel Efficiency

July 31, 1956 by Caroline Letkeman

Letter: Dr. Sylvan H. Stein to BBB New York (July 31, 1956)

Author: Dr. Sylvan H. Stein
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January 1, 1956 by Caroline Letkeman

Promo: The Scientology Foundation of Personnel Efficiency (ca. 1956)

Author: The Scientology Foundation of Personnel Efficiency
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January 1, 1956 by Caroline Letkeman

Promo: The Advanced Course (ca. 1956)

Author: The Scientology Foundation of Personnel Efficiency
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