Great stuff!
By coincidence tonight I was just going through some very old aviation books and stuff I was presented with by my wife's granny (as a reward on gaining my RAF wings in the 1970s).
Got one book from 1911 (cost 1 shilling!) that describes "Lift and Drift" as opposed to lift and drag. Written by a lady called Gertrude Bacon, who I believe was one of the first British women to fly.
Also found an autograph book with the signatures of a few aviation pioneers such as M. Desoutter, W. H. Ewer and Lewis Turner, all piloting aircraft and signed at Hendon in August 1912. Also B.C. Hucks (Hucks starter?), G. W. Hamel, dated Oct 1912.
Also re-discovered what I understand to be the sole surviving copy of a (1950s), RAF produced, 16 mm film about the last Spitfires in RAF service, the 3 Mk 24s based at Kai Tak. One of these aircraft is now in the RAF museum.
Lots of other stuff from before the great war until the 1960s.
Fascinating, to me at least.