More below. The missile is (I believe) a Titan. You can see this either just south of Tucson (where these were taken), or in South Dakota off I-90. You can find the full album here.
Here is a hanging hallway. Besides the security to get into the place (duress codes, plus alphanumerics which changed every day and had to be burned after being read) the most impressive bit was the engineering of the silo itself. Because they expected nearby nuclear explosions, to minimize the effect of the shaking inside the silo, everything in the silo is suspended from the top, rather than being built into the bedrock around the shaft (which would be rocking and rolling post-nuke).
The business end of a rocket, camera inside the nozzle.