Correspondence regarding lectures, acquisitions, and other museum matters, including: notes and correspondence re. an astrolabe; proposed purchases file for replicas of Mariners Astrolabe; correspondence re. copies of mariners astrolabes; file for Director, tracking progress of astrolabe project; various museum and personal correspondence on a range of topics, including an annual leave rota, 1963-1965; letters of congratulation on New years Honours for various individuals; correspondence with James, Chair of Maritime History, and Courtenay and Howard, Naval Terminology; correspondence from/to: E.G. Irving, Kenneth Dewar, Harold Schoeller, K.M. Shepherd, A. Ruddock, letters relating to Mayflower sandglasses, correspondence with Plimoth Plantation, Massachusetts, D.M. Schurman, Washington, Institute of Navigation publications, correspondence 1963, RUSI letter, notes on RAF bombing, P.M.S. Blackett, 1961, C.R. Boxer, British Horological Institute, 1962.