Estelle Harrop Cremers (1925-2010) was active in historic preservation, especially in Chester County, Pennsylvania, from the 1970s to the 2000s. Cremers served on boards and commissions of local historical organizations, helped develop the French and Pickering Creek Trust, worked as the coordinator for the Chester County Comprehensive Historic Sites Survey, researched and wrote nominations for inclusion on the National Register of Historic Places, free-lanced as a historic property and land researcher, and wrote five books on local townships. Estelle Cremers papers, circa 1982-2008, consist primarily of research materials accumulated or created by Cremers that relate to Chester County locations, properties, businesses, people, and other history related topics. Some of the research in the collection relates to locations in Montgomery, Berks, Lancaster, and other Pennsylvania counties. There is also some correspondence and other non-research related materials in the collection.
Estelle Cremers (1925-2010) was a historian in Pottstown, Pennsylvania, who served as the executrix for Grace Rodebaugh and her property, Welkinweir (East Nantmeal Township, Chester County, Pa.) The Estelle Cremers collection on Welkinweir, circa 1975-2001 (bulk 1990-2001), consists of various materials compiled by Estelle Cremers about Welkinweir and the Rodebaugh estate, especially regarding her duty as Grace Rodebaugh's executrix. It includes Grace's will, documents relating to Grace's finances, materials about the donation of Welkinweir to West Chester State College and resultant controversy, materials relating to establishing Welkinweir as an historic site, inventories and other papers relating to Welkinweir, and photographs and slides of the property.