Say you get five books in your library. I pick Hemingway’s “Moveable Feast,” “The Great Rock (and roll) Discography,” by Martin C. Strong, “The Lord of the Rings Trilogy” (counts as one, because that’s how Tolkien wrote it), Darwin’s “On The Origin of Species” and now this: “Fifty Classic Ski Descents of North America.” In a coffee-table offering that is both awe-inspiring and relevant, authors Chris Davenport, Art Burrows and Penn Newhard have created something credible, compelling and cinematic — name another recent print product that does that! With the help of accomplished ski mountaineers such as Lou Dawson, Andrew McLean, Lowell Skoog and Jimmy Chin, they chronicle North America’s biggest and most-famous ski mountaineering faces. Some, like New Hampshire’s Tuckerman’s Ravine, have seen millions of tracks. Others, such as the North Face of Mt. Robson in British Columbia, have been skied only once. All are given the same treatment with super-short, spot-on commentary and incredibly well-picked photography that shows the character of the skiers and especially the mountains and descents themselves. Davenport single-handedly brought the storyline back to American off-piste skiing when in one year over 2006 and 2007, he climbed and skied from the summit of all 54 of Colorado’s 14,000-foot peaks. Here, the cast of skiers happily expands, as does the number of gorgeous descents.