In 1970 Vogue profiled several notable Coloradans, including Ann Zwinger, an unknown nature writer who had just published her first book, Beyond the Aspen Grove (1970). In a black-and-white photograph, Zwinger smiles among Canadian reed grass near the lake at "Constant Friendship," the forty acres she and her family own in the mountains of Colorado. The reviewer describes Beyond the Aspen Grove as "a discriminating, attracting book--part nature study, part adventure, all Colorado love song" and portrays the author as artist and writer, wife and mother, and Easterner turned Western conservationist. The energetic figure of Zwinger that emerges from this biographical sketch characterizes her career; at the time of this interview she was already completing a second book and was planning "to write, from experience, a cookbook for woodstoves." Two years later Zwinger and Beatrice E. Willard published Land above the Trees: A Guide to American Alpine Tundra (1972), but she...