Express Companies of the United States: A Study of Public Service is an important book written by Bertram Benedict that examines the development and influence of express companies in the United States. The author examines the history of these companies since their founding, revealing their role in the development and improvement of the mail and goods delivery system. The book provides a unique insight into the functioning of the public service that has defined the economic and social landscape of the United States. Thanks to the author's detailed analysis, readers get the opportunity to better understand the history of express services in the country, their importance and impact on society as a whole.