"1823 General view of progress on the High Mix concrete Plant, and Head Tower for No. 9 Cableway. December 20th, 1932.
1841 High Mix concrete plant and Head Tower for No. 9 Cableway. January Jth, 1933.
1846 Lower Portals of the Diversion Tunnels, and excavation in the river bottom, for Downstream Cofferdam and Rock Barrier. January 6 th, 1933.
1847 Excavation operations for Downstream Cofferdam. January 6th, 1933."