This 7-volume Pocket Library of the World's Essential Knowledge is a must-have for avid readers and collectors alike. Filled with timeless subjects such as History, Science, Philosophy, and Literature. This collection is a valuable addition to any library. The hardcover binding ensures durability while the compact size (6x4 inches) makes it easy to carry around. These original books were printed in 1929 by Funk & Wagnalls in New York, United States of America. They contain invaluable information written by varied authors and categorized by topics. This set is a rare gem for those who appreciate antiquarian and collectible books.