A classic book of extraordinary black-and-white aerial photographs of mountains and glaciers by two devoted men of ice. The text is by Ed LaChapelle, an avalanche researcher, glaciologist, mountaineer, skier, author and professor, who died in 2007 at 80 of a heart attack while on the slopes in Colorado. Austin Post's stunning aerial photographs of glaciers along the North Pacific Coast of North America and into the interior ranges of Alaska is supplemented with groundbased photographs from the Himalayas, Switzerland, Chile and other parts of the world.  (SCI07, $27.95)