9 x 7 mugshots

When apprentices passed through the 9 x 7 wind tunnel in 25 hangar it was common practice to photograph them and save these photographs in an archive.  The nine pages of that archive survive and are viewable here by clicking on the dates below.
 

 
1973 - 1974 1979 - 1982 1989 - 1990
1974 - 1976 1983 - 1987 1990 - 1991
1976 - 1978 1987 - 1989 1991