{"nrhp_refnum":"66000690","name":"Stenton","other_names":["James Logan Home","Stenton Mansion"],"category":"building","location":{"address":"18th and Courtland Sts.","address_restricted":false,"city":"Philadelphia","county":"Philadelphia","state":"PA","lat":40.024766154000076,"lon":-75.15376307699995,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":true,"nhl_designated_date":"1965-01-12","areas_of_significance":["Science","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"Stenton is a two-and-a-half story brick house in Germantown, Philadelphia, at 18th and Courtland Streets, built circa 1728 by James Logan. It has a service wing, a stone kitchen, an orangery, a stone barn and an ice house on its grounds.","why_significant":"The nomination argues that Stenton is significant as a memorial to James Logan, a little-known but influential colonial figure, and as an outstanding example of Early Georgian architecture. It also cites Logan's library, one of the best in the colonies, and his botanical experiment proving the role of pollen in the fertilization of corn.","narrative":"Built around 1728 in Germantown, Philadelphia, Stenton is a two-and-a-half story brick house by James Logan, a secretary to William Penn who later served as chief justice and acting governor of Pennsylvania. Its Flemish bond brick walls, regular Early Georgian facade and flanking side-lights set it apart, and its long library across the second floor once held Logan's scientific collection, which the nomination describes as one of the finest in the colonies. Logan's experiments on corn in 1727 and 1728 proved that pollen was necessary for the production of viable seed, a finding that was published in 1735-36 and remained influential for decades. The house, with its stone kitchen, orangery and barn, is also important for its association with Logan's public and scientific career. The interior is furnished by the Society of Colonial Dames using inventories of Logan's furniture.","period_of_significance":"1728","architect_builder":"James Logan","architectural_style":"Early Georgian","criteria":[],"status_note":"The interior is maintained by the Society of Colonial Dames, and the document describes the house as maintained in excellent condition by the City of Philadelphia and the Society of Colonial Dames.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:30.260945-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/66000690_NHL.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000690/28f24b7f01-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000690/28f24b7f01-1600.webp","licence":"Public domain","author":"Jack E Boucher","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Stenton-mansion.png\" rel=\"noopener\">Jack E Boucher</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Stenton-mansion.png"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71994317","wikipedia":"https://en.wikipedia.org/wiki/Stenton_(mansion)","wikidata":"https://www.wikidata.org/wiki/Q7607938"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/philadelphia/stenton-66000690/"}