• The Lever-lock Gate

    • Contributor: Fleischhauer, Carl - Wilson, William A. (William Albert) - Nichols, Jesse "Tex
    • Original Format: Film, Video
    • Date: 1981-05-09
  • The Hay Derrick

    • Contributor: Stewart, Leslie J. - Fleischhauer, Carl - Purser, Margaret Sermons
    • Original Format: Film, Video
    • Date: 1982-07-08