Booklet, Geology of the Grand Coulee Dam by Joseph G. McMacken. Copyright 1938.
Booklet cover is tan in color and front cover features "GEOLOGY / OF THE / GRAND COULEE / BY / JOSEPH G. MCMACKEN" in brown text. Title is followed by a sepia toned photograph of Steamboat Rock. Below photograph is "GRAND COULEE DAM / AND COLUMBIA BASIN / IRRIGATION PROJECT / PRICE 25¢ / COPYRIGHT 1938 - JOSEPH G. MCMACKEN, SPOKANE, WASH. / FOURTH EDITION." Front cover has brown line border. Back cover features a brown-tinted illustration titled, "FINISHED COULEE DAM." Booklet features black and white photographs of the Grand Coulee area and Grand Coulee Dam. Booklet discusses the geology and features of the G