Lot 287
A collection of Barnes Wallis' lecture slides mainly about airships in fitted numbered wooden boxes (88 slides, in two boxes) Black Box, Graphs (crossed out in red), 27 slides (4 cracked) Staring at the two-holes end: Section A: 11 slides (1 cracked), two diagrams of airships, two tables and a list of WW2 shipping data, a table of rocket propellant performance, two photos of girders, three slides of text, equations and table Section B: 10 slides (2 cracked), 7 diagrams relating to the performance of airships, three photos of the construction of R100 Section C: 4 slides, 2 diagrams relating to airships, 1 photo ditto, 1 world map showing trade Section D: 8 slides (1 cracked), 1 diagram and 5 photos of the construction of the R100, 1 diagram and photo of the Graf Zeppelin Box 1, Current Lecture, 61 slides (slides are not completely in order; 2 cracked slides) From "Start Here" label: Section A: 16 slides showing world maps and diagrams of airships for long-distance travel Section B: 19 slides (1 cracked) showing the early development of long-distance Zeppelins (Germany to America) compared with British dirigibles and the late development of British airships, culminating with the R100 Section C: 18 slides showing the construction of the R100, the development of BOAC routes around the world, the long-distance Vulcan bomber and an image of the swing-wing Swallow Section D: 8 slides (1 cracked) showing the potential of supersonic travel  £200-300