Preceptor Books
THE AUTHOR AND HIS AUDIENCE: WITH A CHRONOLOGY OF MAJOR EVENTS IN THE PUBLISHING HISTORY OF J.B. LIPPINCOTT COMPANY 79 (1967):
1961 Establishment of Lippincott's Preceptor series of college paperback books
This title (The Adenauer Era) carries the Preceptor imprint, but I can't find any information about its Preceptor number or inclusion in the series otherwise:
