books.google.com - Casting a wide net, this volume provides personal and professional information on some 445 American and Canadian naturalists and environmentalists, who lived from the late 15th century to the late 20th century. It includes explorers who published works on the natural history of North America, conservationists,...http://books.google.com/books/about/Biographical_dictionary_of_American_and.html?id=BdFuHC3DhwAC&utm_source=gb-gplus-shareBiographical dictionary of American and Canadian naturalists and environmentalists
