Scott Andrew Trexler II Research Library and Archives

Over 12,000 Volumes & Three Million+ Documents

UPDATE: The Research Library is open for visitation on Tuesday, Wednesday, and Thursday from 10:00 am to 4:00 pm.  Friday hours are by appointment only. Please call 610-435-1074 between 9:30 am and 5:00 pm to schedule a Friday Library visit. Face Masks are required while in the Research Library and social distancing is maintained.

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Welcome to the Lehigh County Historical Society’s Research Library and Archives. Here, at one of Pennsylvania’s most significant archives, there is a wealth of resource material for the serious and casual historian and the genealogist: books, maps, newspapers, photographs, oral histories, church and social records, personal and family papers, business documents and numerous county records.

To prevent the spread of coronavirus in our community, we are offering researchers our convenient Research Request Look-up Service. A “look-up” is defined as looking up information about one named person, topic or document in a specific collection or record group. For more information and to request a look-up, please complete our

New Research Library Use Procedures during COVID-19

The spread of Covid-19 infection remains a real and serious threat to human health. Our Library Reading Room is not spacious enough to safely accommodate Library patrons at this time.   In order to provide quality service to our Research Library patrons, while continuing to prevent the spread of coronavirus in our community, we are offering researchers the convenience to use our limited “look-up service.” To request a look-up, please complete our Look-up Request Form and send payment with your request. If you have any questions please call 610-435-1074.

The General Harry C. Trexler Collection Finding Aid provides an overview of our collection of materials related to General Harry C. Trexler (April 17, 1854-November 17, 1933).  Born in Easton, Pennsylvania, he was an American industrialist, conservationist, and major philanthropist.  In 1885, Trexler married Mary M. Mosser.  They were married for 48 years, until his death in 1933 from injuries suffered in an automobile accident.  Mary died one year later.  They had no children.  Through a charitable trust Trexler established in his Will, his wealth continues to provide a major benefit to the people and community of Lehigh County, Pennsylvania. 

Our collection of Trexler materials described in the Finding Aid includes ledgers, land records, maps, scrapbooks, photographs, and ephemera related to Trexler’s life and the legacy he left behind.  Our Finding Aid is designed to guide “in-house” research.  This collection is not digitized for off-site viewing or research.  Questions should be directed to Jill Youngken, Director of the archives at 610-435-1074 or j_youngken@lehighvalleyheritagemuseum.org 

Thank you for your interest in the life of General Harry C. Trexler.