Charles Conrad – Sieger stamp block Alan Shepard the XF-92A was an experimental

the XF-92A was an experimental platform that explored the radical delta wing configuration—an aerodynamic concept that would go on to shape generations of supersonic aircraft

Classic NASA 8x10 WSS litho portrait of Jack Lousma

Skylab was the first space station of the US and the second after world's first space station

Excellent to mint condtion - hand signed by Schlegel on the title page

The SWC experiment was deployed on the moon during several moon landings incl

Charles Conrad – Sieger stamp block Alan Shepard the XF-92A was an experimentalCharles Conrad hand signed Ras Al Khaimah stampblock from the official Sieger series of 20 signed stamp blocks comes with the original Sieger COA. Inexpensive moonwalker autograph!