A file of de Havilland reports and memorandums including:
- jet propulsion by A.V. Cleaver, Report R.34, 1941
- ducted fans by A. V. Cleaver and J. Mullin, Report R.183, 1943
- comparison of H.1 with N.S.20.S.I.M by A. V. Cleaver, Report R.126, 1942
- miscellaneous studies in connection with jet propulsion by A. V. Cleaver and J. Mullin, Report R.185, 1943
- report on a visit to the Royal Aircraft Establishment, 1942
- airscrew projects, 1941,
- fan thrust augmentor for H.1
- propellers, ducted fans and jet units by A. V. Cleaver, Report R.191, 1945
- propellers for gas turbines by A. V. Cleaver, Report R.188, 1944
- modern propeller developments, a lecture to the Royal Aeronautical Society's Luton Branch and de Havilland Engines supervisory staff, 1944