Dicionary of file names:

files with names starting with "0" - technicalities
files with names starting with "a" - past conversations
files with names starting with "b" - your soul
files with names starting with "c" - Your family
files with names starting with "d" - deep books and your thoughts on them
files with names starting with "e" - technical books on aviation
files with names starting with "f" - our 1939 alternate scenario
files with names starting with "g" - technical drawings of my aircraft
files with names starting with "h" - general technical books