Exploring America's backcountry / prep. by the Special Publications Division ; National Geographic Society ; [ed.: Gilbert . Grosvenor, Robert L. Breeden ; ill. a. des. Bonnie S. Lawrence [et al.]]. - Washington : [Nat. Georg. Soc., 1979]. - 212, [4] p. : ill. ; 26 cm.см.[MFN: 28710]
Nomads of the world / prep. by the special publ. division, Robert L. Breeden ; ed.-in Chief Melville Bell Grosvenor ; ed. Gilbert M. Grosvenor ; forew. by Leonard Carmichael ; [ill. William L. Allen]. - [Washington : Nation. Geogr. society, 1971]. - 200 p. : ill. ; 26 cm.см.. - ISBN 87044-098-5[MFN: 29301]