"Astral Weeks: A Secret History of 1968" by Ryan H. Walsh is a comprehensive biography that delves into the mysterious and enigmatic events of the summer of 1968 in the United States. The book, published by Penguin Publishing Group in 2019, explores the impact of the summer of 1968 on music, culture, and politics, providing a unique insight into a pivotal moment in American history. With a trade paperback format and illustrations, this 384-page book offers a compelling narrative that will captivate readers interested in music, history, and biographies.