The Lost Keys of Freemasonry

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The Lost Keys of Freemasonry  (1923) 
by Manly Palmer Hall
Published by New York : Macoy Publishing and Masonic Supply Co., in 1923.


  1. The Eternal Quest
  2. The Candidate
  3. The Entered Apprentice
  4. The Fellow Craft
  5. The Master Mason
  6. The Qualifications Of A True Mason
This work is in the public domain in the United States because it was legally published within the United States (or the United Nations Headquarters in New York subject to Section 7 of the United States Headquarters Agreement) before 1964, and copyright was not renewed.
For Class A renewals records (books only) published between 1923 and 1963, check the Stanford Copyright Renewal Database and the Rutgers copyright renewal records.
For other renewal records of publications between 1922 - 1950 see the Pennsylvania copyright records scans.
For all records since 1978, search the U.S. Copyright Office records.

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This work may still be copyrighted in jurisdictions not applying the rule of the shorter term to U.S. works.



Works published in 1923 would have had to renew their copyright in either 1950 or 1951, i.e. at least 27 years after it was first published / registered but not later than 31 December(31 December) in the 28th year. As it was not renewed, it entered the public domain on 1 January 1952(1 January 1952).