Collection of 21 American short silent films. The films were taken from April 18, 1904 to May 16, 1904 in Pittsburgh, Pennsylvania, and document various Westinghouse manufacturing plants.Collection of 21 American short silent films. The films were taken from April 18, 1904 to May 16, 1904 in Pittsburgh, Pennsylvania, and document various Westinghouse manufacturing plants.Collection of 21 American short silent films. The films were taken from April 18, 1904 to May 16, 1904 in Pittsburgh, Pennsylvania, and document various Westinghouse manufacturing plants.