Appalachian wilderness : the Great Smoky Mountains /

by Porter, Eliot 1901-1990, Porter, Eliot 1901-1990
Published 1970

Living birds of the world /

by Gilliard, Ernest Thomas 1912-1965
Published 1958

Down the Colorado : diary of the first trip through the Grand Canyon, 1869 /

by Powell, John Wesley 1834-1902
Published 1969