Selling this on eBay:

X-20 Dyna Soar Model 2050E diagram booklet

Here is a collection of 11X17 CAD diagrams of the X-20 Dyna Soar, specifically the final design, Model 2050E from 1963. These diagrams were created for issue V3N4 of Aerospace Projects Review; since this issue has not yet been published (and won’t be for a while yet), these will be the only copies of these diagrams out-and-about for some time. And if I get mashed by a Mack truck before V3N4… well, these will be the only copies out there, period.

These are bound in a 12X18 pressboard report cover with prong fasteners… outdated today, but appropriate for early 1960’s aerospace history. The collection currently has 25 pages, though this may change. Any additional diagrams that are finished prior to the end of the auction (I’d estimate one or two) will be added. The collection includes, but is not limited to: 1/48 scale 5-view diagram of the X-20 Dyna Soar, accurately showing the configuration of the metallic heat shields; several 1/72 layout diagrams of the X-20 with adapter and transstage; several 1/125 scale diagrams of the X-20/Titan IIIc launch vehicle, in different configurations; 1/175 X-20/Saturn C-1; 1/48 3-view of the “synergetic” configuration; numerous diagrams of various small space stations designed with operational Dyna Soar shuttle vehicles in mind; a scale comparison of the Dyna Soar with the ASSET test vehicle, the X-37B spaceplane and the HTV-2 test vehicle; separate 3-views of those other vehicles; and as a bonus, diagrams from issues V2N5 and V3N3 showing earlier versions of the Dyna Soar used as components of advanced launch systems such as the Aerospace Plane and the B-70 based Reusable Booster System.