Correspondents on the Fleet Air Arm include: Brigadier-General Percy Groves; Vice-Admiral Sir Reginald Henderson, 3rd Sea Lord and Controller of the Navy, on subjects including the need for the RAF to specialise (2); Admiral of the Fleet Sir Roger Keyes; Lord Louis Mountbatten [Admiralty, Naval Air Division] on the need for a unified service in defence of trade and recommending Captain Cosmo Graham as a source of information; Marshal of the RAF 1st Lord Trenchard on reasons for the Air Ministry's control of the Fleet Air Arm, and problems with having 2 air services (2); Desmond Morton on WSC's paper on the Fleet Air Arm, putting anti-air defence under the Air Ministry, and commenting on Trenchard's views (2); "Brab" [John Moore-Brabazon, later 1st Lord Brabazon of Tara].Also includes: notes by Keyes on the Navy's need for an air service, and galley proofs of his article "The Navy and the Air, dual control and the Fleet Air Arm, dangers of division"; note by [?] Captain Edward Altham, Secretary, United Services Institute, on measures for the Fleet Air Arm; [?] Naval Air Division memoranda on the effects of divided responsibility for maritime air work, including training, operations, administration and the use of land-based instead of ship-borne aircraft; note by Vice-Admiral Sir Reginald Henderson on the case for naval control of the Fleet Air Arm; paper by WSC, redrafted by Desmond Morton, on the Fleet Air Arm, and Air Ministry responsibility for anti-aircraft defence; memorandum by WSC on the case for a separate Ministry of Supply; copies of Brigadier-General Percy Groves's pamphlet "Unity or Duality in the Air", with comments; notes by John Moore-Brabazon commenting on WSC's paper on the Fleet Air Arm, and on keeping all air matters in the RAF; memorandum by Marshal of the RAF 1st Lord Trenchard on WSC's paper; note by WSC on Admiralty - Air Ministry relations; notes and copies of correspondence by WSC and [Violet Pearman], Secretary to WSC, to individuals listed above and also to others including Sir Eustace Tennyson d'Eyncourt and Frederick Guest.