The library has an extensive collection on resources concerning the history of Brownsville and the surrounding area, including:

Microfilm:

• Fayette County Census from 1790 to 1880, and 1900 to 1930
• Brownsville Clipper Newspaper from June 20, 1889 to December 27, 1912
• Brownsville Telegraph Newspaper from August 29, 1927 to December 31, 1965
• Records of the Provincial Council, 1682 to 1776
• Pennsylvania's Revolutionary Government, records from 1775 to 1790

Obituary index:

• Brownsville Clipper (1889 - 1912)
• Brownsville Telegraph (1927 - July 1935, work is ongoing)

Local history book collection:

• Franklin Ellis's History of Fayette County
• John W. Jordan's Genealogical and Personal History of Fayette and Greene Counties
• Thomas Searight's The Old Pike: An Illustrated Narrative of the National Road
• John Percy Hart's History and Directory of the Three Towns
• Biographies of James G. Blaine, John Brashear, & Albert Gallatin
• Yearbooks from Brownsville area schools back to the early twentieth century
• Various resources on the National Pike, rail and river travel, and Brownsville landmarks