Space Drawing Set 20 contains the best of drawing sets 18 & 19, condensed into a single inexpensive package:
McDonnell Douglas drawing 255BJ00050sht1: General Arrangement, Siamese Tank, Delta Wing Orbiter (8154X3231 pixels)
McDonnell Douglas drawing 256-20-0001: General Arrangement Model 256-20B Booster (also shows Model 255 orbiter), 6416X3263 pixels
Martin Marietta drawing 899A2010642: Booster Overall TPS Assembly, 11472X3253 pixels
These show the McDonnell Douglas Model 255, Phase B high crossrange orbiter and the Model 256-20B McDonnell-Douglas/Martin Marietta manned, reusable, flyback Space Shuttle booster from 1971. All drawings are in B&W, and all come with half-size versions for easier viewing and printing. All contained in a single ZIP file.
Space Drawing Set 20 can be purchased for download for $5.50:
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