Lithograph of Lockheed-California lunar lander concept found on eBay.
Source:
http://www.ebay.com/itm/Lockheed-1960-s-Lunar-Landing-Module-Design-Concept-Drawing-11-x-14-/131532819387?pt=LH_DefaultDomain_0&hash=item1e9ff78bbb
Source:
http://www.ebay.com/itm/Lockheed-1960-s-Lunar-Landing-Module-Design-Concept-Drawing-11-x-14-/131532819387?pt=LH_DefaultDomain_0&hash=item1e9ff78bbb