The 18th-century church records and 19th-century Nantucket map were created with materials likely chosen to insure permanence. Over time, however, the iron gall ink used to write the documents and the varnish applied to protect the map have both proved to have detrimental effects, situations best addressed through professional conservation. The conservation treatments were undertaken this summer by Winterthur/University of Delaware Program in Art Conservation (WUDPAC) Fellow Emily Farek, a paper major with a minor in library and archives, during her five-week internship at the Conservation Center for Art and Historic Artifacts (CCAHA) in Philadelphia. The church minutes, billings, and receipts belong to Philadelphia’s historic Christ Church, and the iron gall ink with which they had been written was causing both the ink and supporting paper to deteriorate. Emily’s goal was to stop the damage. After first cleaning away areas of grime with natural vulcanized rubber sponges and white vinyl eraser crumbs, she tested the inks for their solubility in water and treated the documents with a calcium-phytate solution that stabilized the iron component in the ink. The treatment required immersing each of the 39 documents three times: first in a calcium bicarbonate solution prewash, then in a calcium-phytate solution, and finally in a calcium bicarbonate solution rinse. Final treatment with gelatin sizing and mulberry paper lining or mends improved the physical and chemical stability. The treated and dampened pages were allowed to dry between pieces of felt, placed under weights to keep them planar.