Box containing 186 folded plans of aircraft carriers as follows: 70 plans of HMS Terrible (1944), 50 plans of the same vessel as sold to Australia in 1948 and renamed HMAS Sydney, 19 plans of HMS Pretoria Castle (1938), and 47 plans of HMS Manxman (1904). Plus aircraft lift operating instructions on 34 sheets and wiring diagrams on 32 sheets.