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 his military career, 1914-1945, dated 1914, 1917-1918, [1945]-1978, principally comprising typescript texts of lectures, [1965-1975], on his service with the Australian Military Forces, 1937-1939, the planning and execution of Allied invasion of North Africa, 1942, and his service with the SOE, North West Europe, 1943-1945; correspondence with Sir ArthurWynne Morgan Bryant, 1978, concerning Mockler-Ferryman's service with Maj Gen John Greer Dill, Commandant, Staff College, Camberley, 1933, and Gen Sir Alan Francis Brooke (later FM Alan Francis Brooke, 1st Viscount Alanbrooke of Brookeborough), Commander-in-Chief, Home Forces, 1940-1941.