This is a must have book for any locksmith/safe technician’s library. This book chronicles the life of Harry C. Miller who was one of a handful of individuals who dominated and defined the physical security community in the 20th century. The book is laced with history and anecdotes from his early life when he would travel to watch his father erect bank vaults to his apprenticeship with Diebold, the formation of his own company in 1941, the invention of the first manipulation proof combination lock and 29 other patents, through his presidency of Sargent & Greenleaf which spanned three decades and the creation of Lockmasters.. The book contains 119 rare photos many of which are selected items from the Harry C. Miller Lock Collection