"Fundamentals of Vacuum Tubes" by Austin V. Eastman is a rare and collectible book published in 1941 by McGraw Hill. This hardcover book is written in English and is illustrated, providing detailed information on vacuum tubes and their use in radio technology. The author, Austin, and the publisher are both from North America, specifically the United States, making this publication a valuable resource for collectors and historians interested in the development of vacuum tube technology during that time period.