I recently bought a copy of The Song of our National Parks and Flowers by Edward A. Clark from a used book store in Carrollton, GA (Underground Books). Copyrighted in 1958,  it was published by Augustana Book Concern out of Rock Island, Illinois, which is still in business. On page 25, the poem for Mammoth Cave appears. On the facing page, there is a black and white photograph from Frozen Niagara. It's upside-down. Photograph credit is the National Park Service.The copy I bought (found by Barbara) with a good dust jacket is in fairly good condition. I can understand someone unfamiliar with caves making a mistake in the layout of the book. I would have thought that someone along the line would have caught it. The picture on page 7 of Carlsbad Caverns is oriented correctly. So is the photograph of Wupatki, but it's not in a cave. Nor are any of the others.