Papers relating to his life and career 1928-1981, including correspondence, (letters, reports, memoranda, training programmes, photographs and maps) relating to the Allied invasions of North Africa and Sicily (Operation TORCH and Operation HUSKY), 1942-43; correspondence between Salmon and the Air Ministry relating to the daily running of RAF Regt units under his command in North Africa, Sicily, Italy, Greece and Yugoslavia, 1942-1945; correspondence with Maj Gen Claude Liardet, Commandant of RAF Regt, 1942-1945; Salmon's retrospective war diaries (2 vols.) detailing RAF Regt unit operations in Mediterranean theatre, 1942-1945; maps of North Africa, Sicily, Italy, France, Greece and Yugoslavia, 1928-1944; photographs of RAF Regt units in Greece, North Africa and Italy, 1942-1945; papers relating to 'Ground-Air Landmark' (GAL) operations conducted by RAF Regt, 1944-1945.

Papers relating to McNeill's career, 1942-1946, notably on Army-Air collaboration, 1942-1945, including typescript 'Eighth Army training memorandum No 1' by Lt Gen Bernard Law Montgomery, General Officer Commanding 8 Army, Middle East Forces [1942]; typescript memorandum by McNeill 'Recommendations for reorganisation of AASC (Army-Air Support Control)',1942; printed 'Middle East training pamphlet No 3B (Army and RAF). Direct air support', issued by General Headquarters, Middle East Forces and Headquarters, RAF, Middle East, 1943; typescript war diary of Detachment A, Air Support Control, 5 Corps, Italy, Mar-Jun 1944; typescript report produced by Headquarters 21 Army Group, British Liberation Army, North West Europe, entitled 'Notes on airsupport, June-October 1944', Nov 1944; typescript notes by McNeill entitled 'Offensive air support in the Burma campaign, 1944-1945'; two typescript draft chapters for a projected book entitled 'Air support in North Africa, Pantellaria, and Sicily, 1942-1943' and 'Air support in the Italian campaign, 1943-1945' [1946]; typescript account by Roy Smith entitled 'Air support in the desert: an account of the use of air forces in support of the Army from the Gazala battles in 1942 to the end in Tunisia', 1988.

Papers, photographs and maps relating to the invasions of Sicily and Italy, including the war diary of 41 Royal Marines Commando, 1943.