Bridge to Space

I can't prove it, but having just watched this 1968 NASA release, believe the narrator to be actor Jim Davis of Dallas fame. His page list no such credit, nor does the film list the narrator.

This documentary takes the form of a tour bus ride through the Kennedy Space Center. As such it does a very good job of explaining the basics of a Saturn V assembly, launch and control. The music in this video is a little strange and distracting but the narration is informative and easy to understand. some of the visuals are very informative, you get to see the mobile service structure and one of the low bays in the VAB with three complete Apollo modules ( moon lander adaptor, service module and command module) and you get to see an Apollo Saturn V and launch Utility Tower on the way to the pad with the other two towers in the background. the video also give interesting information about the size and internal weather inside the Vehicle Assembly Building. All in all I recommend this to any moon rocket fan.