After the death of Fr. Jarzębowski On September 13, 1964, the care of the Museum was taken over by Rev. Paweł Jasiński (1922-2003) and then subsequent superiors of the Religious House in England. In 2002, Fr. Wojciech Jasiński, and Barbara Lejczak became the new curator.
    In 1979, the Museum became one of the founding members of the permanent conference of Polish Museums, Libraries and Archives in the West. In 1982, the museum was registered and opened to visitors.
   There was also a time of organizing, cataloging and processing the collections. The first guide to Fawley Court in Polish by Adolf Jacewicz is created. On the initiative of Maria Danilewicz-Zielińska, the cataloging of documents and old prints, previously organized by Fr. Piotr Miros. Since 1997, students and graduates of art history at the Catholic University of Lublin have been working on organizing art collections, cataloging and new arrangements of the exhibition. The employees of the Central Museum of Textiles in Łódź also participated in the work on the collection of fabrics. In 2000, the museum started cooperation with the National Library in Warsaw in order to organize and create a complete catalog of the museum's book collection, including manuscripts, old prints, documents, 19th-century leaflets and magazines. Thanks to the help of the Library and the sponsor - the Security Printing Works, the conservation of the most valuable manuscripts was also possible. In the following years, activities related to organizing the collection were continued and work on the modernization of the facility was commenced.