Willy Ley is best known for his writings on rockets and space, but he had an interest in a wide variety of things. In this volume, he writes entertainingly on such diverse items as unicorns, pterodactyls, sea serpents, and even carniverous trees, all fron a popular-scientific perspective. Someone wanting information about clues to the possible existence of dinosaurs in a Babylonian wall pictorial, or apparent human handprints in sandstone around the time of the dinosaurs, will find all that and more in this book,It was published in 1959, and a little of the information is dated. But not much.
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