The “Atlas of the 20th Century” by Hammond World Atlas Corporation is a comprehensive reference book that covers a range of subjects related to atlases, gazetteers, and maps. Published in 1999, this revised edition features detailed maps of the world, making it a valuable resource for educators, students, and anyone interested in exploring historical events and geographical data. With a visually engaging format and informative content, this atlas is a must-have for those looking to deepen their understanding of the 20th century on a global scale.