Electric industry workers : Unseen cinema. 1, The mechanized eye. Episode 9, Panorama view street car motor room, Westinghouse Works, 1904 ; Panorama of Machine Co. aisle, Westinghouse Works, 1904 / Cineric, Inc. presents ; by G.W. "Billy" Bitzer for American Mutoscope and Biograph Co
Electric industry workers -- Pennsylvania -- Pittsburgh : Unseen cinema. 1, The mechanized eye. Episode 9, Panorama view street car motor room, Westinghouse Works, 1904 ; Panorama of Machine Co. aisle, Westinghouse Works, 1904 / Cineric, Inc. presents ; by G.W. "Billy" Bitzer for American Mutoscope and Biograph Co
1904
1
12
Electric industry workers -- Sydney : Working mothers and their children : the Electrical Trades Union Study August 1974 / by Ailsa Burns ... [and others]