The material in this series deals with the history of the Upjohn Company and its subsidiary Asgrow and is mainly produced from the advertising and public relations departments. However, there is material produced from outside the company as well, mainly consisting of newspaper and magazine articles about the history of the company. The range of history that is represented in this material pre-dates the Upjohn Company and goes back to Uriah Upjohn in the 1840's and proceeds to the Asgrow Material in 1988.