One of the signs accompanying the lunar module. It reads
Historic Mechanical Engineering Landmark
Apollo Lunar Module
The Apollo Lunar Module (LM) was the first piloted vehicle designed to operate
solely in the vacuum of space. It was developed by the Grumman Aircraft
Engineering Corp. (now Northrop
Grumman). The LM's main functions were to carry two astronauts from
lunar orbit to the Moon's surface, and then return them to lunar orbit to
rendezvous and dock with the Apollo Command-Service Modules. On the surface,
the LM served as a shelter and base of operations as the astronauts carried out
their exploration and experiments.
On July 20, 1969, the LM "Eagle" touched down on the moon, becoming the first
piloted spacecraft to land on a celestial body other than Earth. Five more
landings followed. This vehicle, LM-13, was scheduled to fly as Apollo 18, and
is representative of the lunar modules that traveled to the Moon.
This sign states that LM-13 was to fly on Apollo 18, while the other signs
cite Apollo 19. Since LM-12 flew on Apollo 17, it would seem
more likely that LM-13 was destined to fly Apollo 18, rather than Apollo 19.