Scott Andrew Trexler II Research Library & Archives
12,000+ Volumes Three Million Documents
Welcome to the Lehigh County Historical Society's Library and Archives. We invite you to explore our excellent collection of local and regional history and extensive genealogy holdings. Here, at one of Pennsylvania's most significant archives, you will find 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 facilitate your research, our reading room offers skilled staff and comfortable quarters.
If you can't travel to our Library, professional research services are available by mail. For more information and a Research Request Form, click here.
Tuesday through Friday: 10:00 a.m. – 4:00 p.m. Our Archives close at 3:30.
Saturdays: We will continue our spring schedule when the library is open two Saturdays per month. Our Archives are closed on Saturdays.
The Library will be OPEN:
Saturday, April 1: 10:00 a.m. - 4:00 p.m.
Saturday, April 22: 10:00 a.m. - 4:00 p.m.
Saturday, May 6: 10:00 a.m. - 4:00 p.m.
Saturday, May 20: 10:00 a.m. - 4:00 p.m.
The Library is closed 1:00 p.m. – 1:30 p.m. on Saturdays.
Our Archives are closed on Saturdays.
The Library and Archives are closed Sundays & Mondays.
Museum, Library, and outlying sites are normally closed major holidays.
The Library will be closed Friday, April 14, in observance of Good Friday.
FOR INFORMATION ABOUT WEATHER-RELATED CLOSINGS, PLEASE CALL US AT 610-435-1074. IF NO ANSWER, PLEASE CALL 484-553-2592. THANK YOU!
For more information about our collections, click on one of the buttons below: