I have some old 8mm films that I finally had changed over to DVD format and there are some clips of a few amusement parks on there. I have found three clips. The first clip is of Silver Dollar City sometime in the early 70's, the second is of Six Flags over Mid-America in its opening season, and the thrid is a clip from Six Flags over Texas in 1971. Here are the links to the clips on You Tube.
__________________
Jim says; "The Potential energy of the system at the height of the lift hill is equal to the Kinetic energy at the bottom of the hill...."
Jim's friends say; "Just shut up and ride it would you."