Ketchum, Richard M.2018-12-182018-12-181960-03-20EPM-068-08-043http://hdl.handle.net/20.500.11867/1495510 sheets 22 x 13.5 inch. Printed recto and verso.Reprinted from The New York Times, this lengthy and large-sized advertisement tells the history of their company from the very beginnings, with portraits of each of their directors. Black and white photographs throughout the later years, including Priest Rapids being built.Dams--Priest Rapids;