Lot 296
A collection of Barnes Wallis' lecture slides mainly about Aircraft and their Performance in fitted numbered wooden boxes (98 slides, in 2 boxes) Box C, Graphs, 49 slides Graphs mainly relating to aircraft speed, ceiling, range, including supersonic. Box J, Illustrations, 49 slides, 1 cracked Slides 1-26 Photographs of the stratospheric chamber Slides 27-34 Miscellaneous photos Slides 35-44 Photos of jet aircraft and rockets Slides 45-48 Photos of spitfires and flying boats Slide 49 Newspaper cartoon  £100-200