Like This is the American Earth (1960, p. 70) by Ansel Adams and Nancy ewhall this photographic study points to the need for awareness of our land, and the necessity of conservation. Glen Canyon, a mysterious, unexplored region in the olorado River district, was destroyed this year when a dam was erected which buried the eroding rocks and unusual wild life along the banks. In his introduction, Mr. Porter states the importance of the canyon to geologists and the pure beauty in it for travelers; had his book been published sooner, the canyon may have had a chance for survival. Now, the 72 color plates (all the photography of Mr. Porter) with the accompanying comments by various writers, stand as a long eulogy to a lost land. While the pictures are finely executed, there is a sameness in many which will only be appreciated by geologists and others specifically interested in the valley, who want to observe the various kinds of rock and rock formations. There is not then sufficient variation to make this a general gift book but it has a special commemorative and regional interest.