Bidspirit auction | Aviation book, 1st half of

Aviation book, 1st half of the 2 - Aviation book, 1st half of the 20th century. Notebook, likely belonging to a student or teacher, for pilot training. Handwritten texts on graph paper, plus numerous very finely executed and partly colored ink drawings on tissue paper, depicting mechanical aircraft details, weather maps, navigation and circuit diagrams, etc. Probably circa 1940, mentions, among other things, “Ju88 fighter plane,” etc. Rare. Very interesting, please view. Approx. 30 x 21 x 2 cm