For the liberal and carefree, powerHouse Books in association with magazine High Times are looking back on 40 years of history and legacy. Founded in 1974, High Times has become both drug and popular culture’s de facto book on counterculture. Over the course of the magazine’s four decades of publishing, more than 420 covers each present a unique take on the culture and industry it represents ranging from comedic to absurd with compelling content at its core. Given the widespread adoption of legal usages of marijuana, High Times looks to have a bright future ahead. The book’s introduction comes courtesy of one Tommy Chong — High Times‘ most frequent cover subject. The book releases this month and can be pre-ordered through powerHouse Books.