The health and safety of our visitors, volunteers, and staff remains our top priority. In compliance with the recommendations of local and state officials to help prevent the spread of COVID-19, the Detre Library & Archives will remain temporarily closed to the public until further notice.
All public programs originally scheduled through April 30 are either postponed or canceled. This is a fluid situation, so please continue to follow our website and social media platforms for the most up-to-date information on our museums and programs.
The Thomas & Katherine Detre Library & Archives at the Senator John Heinz History Center is Western Pennsylvania’s preeminent source for researching the region’s rich history.
Founded in 1879, the Library & Archives preserves the rich history of Western Pennsylvania, and makes its collections accessible to researchers, students, and the general public.
The Library & Archives collection includes:
- 700,000 photographs, prints, and negatives
- 40,000 books, pamphlets, and monographs
- 3,500 individual archival collections of families, organizations, businesses, and industries
- 600 periodical titles
- 500 maps and atlases
Learn more about Western Pennsylvania, a region of cultural and ethnic diversity and unsurpassed significance in the history of industrialization and economic development.
Please note: The Library & Archives will be closed on Saturday, March 7.