Incredible Books from '40-'50's, part 1

I came across this reading list on the back of a Signet book from 1955 - excellent reading, not polluted by political correctness: HOW TO KNOW THE BIRDS Roger Tory Peterson. Line drawings and silhouettes of over 200 common species, selected from the cloth-bound edition, illustrate this basic handbook by 'a noted ornithologist. HOW TO KNOW THE WILD FLOWERS Alfred Stefferud. The habitats and habits of wild flowers, their distinguishing family marks, and how to grow them. Illustrated by Sidney Horn. HOW TO KNOW THE AMERICAN MAMMALS Ivan T. Sanderson. What mammals are - how to identify them, where they live-written and illustrated by - a distinguished naturalist. 200 pictures. THE MEANING OF EVOLUTION (revised and abridged) George Gaylord Simpson. The principles and meaning of evolution, tracing the entire span of life on earth and its ethical implications for mankind. MAN MAKES HIMSELF V. Gordon Childe. Man's social and technical evolution through 340,000 years of progress-the first American edition of a brilliant classic. LIFE ON OTHER WORLDS . H. Spencer Jones. Does life exist on other worlds? A lucid discussion of this intriguing question.