Royal Naval Air Service/RAF pilot's flying log book, 1918-1924; three RAF pilot's flying log books, 1924-1926, 1934-1936 and 1937-1946. Four photograph albums, with many captioned photographs of Lynch's service in Turkey and southern Russia, 1919, and Iraq, 1931-1934, also 51 photographic negatives, mostly of southern Russia, 1919. Personal papers and photographs,1917-1946, including printed RAF certificate for the completion of a course in 'Aerial gunnery and bombing, Eastchurch, Kent, 1924, congratulatory letter to Lynch, concerning a successful air display, from AVM Cyril Louis Norton Newall, Air Officer Commanding Wessex Bombing Area, 1931, and printed service history, compiled by Lynch's son, 1994.

Digital copies of flying log books, 1917-1946, notably covering his service with 5 Sqn, 5 Wing, Royal Naval Air Service and 205 Sqn, RAF, France, 1917-1918, and with 70 (Bomber) Sqn, Iraq, 1928-1930, and including detailed accounts of bombing raids on France, 1917-1918.