Search the Catalog

Interested in delving more deeply into the collections? RolloPAC is our online catalog providing access to information about artifacts, books, documents, images and other materials in the holdings of the Mercer Museum and Library, and Fonthill Castle. While it does not include every item in our collection, RolloPAC is added to and updated regularly as collections are cataloged and processed.

Currently, RolloPAC provides access to the catalog records of thousands of artifacts in the Mercer Museum and Fonthill Castle collections.



Curious about what’s in the Mercer Museum’s library and archival collection? Below is a link to our new online catalog. This provides the most updated listing of our holdings. Our library collection contains mostly published materials such as books or pamphlets relating to local history and genealogy. It also includes family bibles with genealogical information, periodicals, early imprints, and Bucks County authors.

The archival collection of the Mercer Museum Research Library contains unpublished materials related to family and local history. These items can include photographs, diaries, maps, drawings, ledgers, personal papers, genealogical research, and scrapbooks.

We are excited to announce that in 2022 our archival and museum collections will join our library collection in our new online database! You will be able to search easily through all three collections from one website.

Library & Archives Catalog


The Research Library of the Mercer Museum houses over 20,000 books, 2500 feet of county archives, over 12,000 images and more!
Rollo's Fact 9

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• Effective Thursday, January 6, 2022, face coverings will be required for anyone inside our buildings. Learn more about our Covid-19 policies.