Desert environment leaves its stark impress upon plants, animals, and men. And Ross Calvin tells the beautifully strange story of New Mexico-its ancient culture, the coming of the Spanish friars, the Spanish occupation, pueblo life, the Apaches and their long warfare with the whites, cattle and sheep raising and cowboys and outlaws, and the old trails, and the coming of the railroads-treating all these in the light of the physical features and physical conditions of the country. Calvin knew New Mexico intimately, and the writes of his observations and experiences in his rides and tramps through the region. His novel point of view and material afford a unique approach to the arid American Southwest. The journalist Ernie Pyle, who lived in Albuquerque with his wife for a period in 1942, stated that Calvin's book was "our Southwestern Bible," and the famed Western librarian and critic Lawrence Clark Powell gave his imprimatur when he called it the "finest single book about New Mexico." Many of the books listed in the Bibliography are in new editions from Sunstone Press in its Southwest Heritage Series.