This series contains a history written in 1967, biographies of members, speakers, honorees and award winners. There is material related to the 75th and 100th anniversaries of the Society. There are also newspaper clippings pertaining to the activities, business and people of the Society, and two scrapbooks containing correspondence, newspaper clippings, programs and memorabilia. There are photographs of the 100th anniversary celebrations held in 1984, as well as undated photographs of persons, places and events. There is a slide carousel of 93 slides, with written script of the 100th Anniversary celebration.