Papers relating to his service as Third Sea Lord 1915-1916, principally comprising 'History of armoured cars, juggernauts, land battleships, tanks', a memorandum on the development of an armoured car force, 1914-1916, written [for Tudor and other Sea Lords] by Murray F Sueter, Sep 1916; 'Report on the design and construction of first land ship (tank)', written for Tudor by E H Tennyson D'Eyncourt, Director of Naval Construction, Sep 1916. Biographical notes on Tudor, compiled for members of the family by his great nephew, A B T Davey, with covering letter, 1976.