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 includes information about the Mercer Museum and Library, and Fonthill Castle archival and museum collection. The archival collection of the Mercer Museum Research Library contains unpublished materials related to family and local history.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. It also 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 collection? Below is a link to our new online library 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.

We are excited to announce that in Spring 2021 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 Catalog


There are 44 rooms in Fonthill including 10 bathrooms, 5 bedrooms and 18 fireplaces. Completed in 1910 Fonthill boasted modern conveniences- 2 dumbwaiters, an Otis elevator, an intercom buzzer system and phones to communicate within the house.

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Beginning Monday, March 1, 2021 the Mercer Museum & Fonthill Castle will be open 6 days per week, Tuesdays – Sundays from 10 a.m. – 5 p.m., and will be closed on Mondays. The Mercer Museum Research Library will be closed from Saturday, March 6 - Saturday, March 13, 2021 to upgrade our facilities. The library will reopen on Tuesday, March 16, 2021.