Not including Heathrow, we have 145 airport handbooks etc dating from the 1930s to the present day. This includes airport opening brochures of Leicester Municipal Aerodrome (1935) and Gatwick Airport (1936), a 1931 report on Liverpool Speke, a handbook for Heston and a 1937 architects study on Manchester Ringway.
If you have any handbooks or guides of civil aerodromes that you would like to donate, then please PM me
You can tell a builder from an archaeologist by the size of his trowel. Mine is a small one!