In existence since 1755, the Union Library of Hatboro is the third oldest library in Pennsylvania and the second oldest to be operating under the original charter. In addition to an extensive collection of antiquarian books and institutional records dating from the mid eighteenth century, its archival holdings include ledgers, scrapbooks, minute books, photographs, newspaper clippings, and other documents dating from 1755 to the present. The Union Library of Hatboro also has collected archival documents relating to the history of Hatboro. The entire collection totals over 20 linear feet of materials.