I enjoy collecting books in general and more recently became interested in WW2 aircraft manuals. There is a certain exciting looking over these old manuals and plans and thinking how incredibly top secret these documents were in their day. If anyone is interested in this type of thing I found the following site. Has many original aircraft manuals, plans and blueprint for planes such as P-51 Mustang, F4u Corsair, Spitfire, Messerschmitt Bf 109, Focke Wulf Fw 190, Ta 152, dh82 Tiger Moth (de Havilland) and so on. This is one of the highest quality sites in terms of scans that I have found so far. Take a look they do have some free stuff as well. Cheers, CPJ. Manuals on the Web