Established in 1939, the mission of the Haverford Township Historical Society is to protect, preserve, and promote the history of Haverford Township (in Delaware County, Pennsylvania) and to sustain its cultural heritage for future generations through educational programs, accessible archives, and site preservation. The Society's headquarters is the circa 1800 Nitre Hall, which served as the home of the master of Nitre Hall Powder Mills in the early 19th century. The Society houses nearly 60 linear feet of archival materials dating from 1759 to the present, including family manuscripts, organizational records, photographs, and some secondary-source research material. Items of special interest are: Wilbur Hall photographs, circa 1890-1920, a collection of over 200 glass plate negatives and their corresponding photographic prints documenting suburban trolley transit; the 1864 Civil War diary of Union Soldier Charlie S. Bailey; and the records of several local women's clubs.