A chapter on his early efforts offers one of the best definitions yet articulated about photography as art. There are lively accounts of his acquaintance in conservation work with several U.S. presidents, and of relationships he had with photographer colleaguesStieglitz, Steichen, Weston, Georgia O'Keeffe, Nancy and Beaumont Newhall, Paul Strand, Dorothea Lange, Imogen Cunningham, Edwin Land and others. The illustrations here include personal shots of family, friends and wilderness high jinks, as well as many Adams masterworks like 'Yosemite Half-Dome' and 'Moonrise, Hernandez.' Hardcover, DJ, Fine.