{"nrhp_refnum":"99000880","name":"Rock Hill Farm","other_names":["Davis-Stauffer Farm Complex","36cfr358"],"category":"district","location":{"address":"12995 and 12755 Bain Rd.","address_restricted":false,"city":"Mercersburg","county":"Franklin County","state":"PA","lat":39.75728441250004,"lon":-77.87044413341874,"geom_source":"nps_gis"},"listed_date":"1999-07-28","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Agriculture","Architecture","Historic - Non-Aboriginal"],"significance_levels":["state"],"summary":{"what_it_is":"Rock Hill Farm is a historic agricultural district of about 105 acres one mile southwest of the crossroads village of Welsh Run in Montgomery Township, Franklin County, Pennsylvania. It contains three dwellings, ten support buildings and three structures, including a concrete silo, a stone barnyard wall and an old limekiln.","why_significant":"The nomination argues the farm is an excellent example of a Cumberland Valley farm complex that evolved from initial settlement in the mid 18th century through the mid 20th century. Its buildings and landscape are said to show changes in regional agriculture, and the Davis-Chambers house contains rare 18th-century construction, including a puncheon flooring system. A 1994 archaeological investigation uncovered remains of an earth fast building, which is considered rare outside the Tidewater region.","narrative":"Rock Hill Farm lies about a mile southwest of Welsh Run in Montgomery Township, Franklin County, on roughly 105 acres of limestone fields, pastures and woodlots. Its domestic buildings cluster along Welsh Run and the west side of Bain Road, and the farm was a single unit from 1740 to 1880. The core of the district is the Davis-Chambers house, whose oldest section is a stuccoed log structure built by the Davis family before 1793. Robert Chambers enlarged and refined it in the 1790s with a Georgian-influenced plan, raised panel doors and beaded board ceilings. The Eliab Negley house, built about 1810, and a brick house built by Joseph Negley, from 1830 to 1860, illustrate German building traditions. The farm is significant for its agricultural development, its rare 18th-century construction and an archaeological earth fast building, which documents early settlement patterns in the Cumberland Valley.","period_of_significance":"ca. 1735 to 1948","architect_builder":null,"architectural_style":"Vernacular, German & Greek Revival influence","criteria":["A","C","D"],"status_note":"Still used for dairy farming; the Davis-Chambers log section serves as the home of the Conococheague Institute for the Study of Cultural Heritage, and one section of the house was updated in 1994 and serves as a rental unit.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:37.120693-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/99000880.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/99000880/14691f01fd-800.webp","url_1600":"https://nationalhistoricalregister.com/media/99000880/14691f01fd-1600.webp","licence":"CC BY-SA 4.0","author":"JERRYE &amp; ROY KLOTZ, M.D.","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:ROCK_HILL_FARM,_FRANKLIN_CTY,_PENNA.jpg\" rel=\"noopener\">JERRYE &amp;amp; ROY KLOTZ, M.D.</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:ROCK_HILL_FARM,_FRANKLIN_CTY,_PENNA.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71996486","wikipedia":"https://en.wikipedia.org/wiki/Rock_Hill_Farm","wikidata":"https://www.wikidata.org/wiki/Q7354465"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/franklin-county/rock-hill-farm-99000880/"}