The Thomas & Katherine Detre Library & Archives at the Senator John Heinz History Center is the source for research about Western Pennsylvania.

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.

Click here to visit the Library & Archives blog!