@book {7490, title = {America{\textquoteright}s National Park}, year = {1997}, note = {Illustrations Originally published in 1990.}, publisher = {Publications Internatinal}, organization = {Publications Internatinal}, address = {Lincolnwood, IL}, keywords = {Photographs, Tourism}, author = {Boslough, John and Gattuso, John and Tourangeau, Richard} }