{"nrhp_refnum":"94001646","name":"Lesley, J. Peter, House","other_names":["See also:Clinton Street Historic District","Washington Square"],"category":"building","location":{"address":"1008 Clinton St.","address_restricted":false,"city":"Phialdelphia","county":"Philadelphia","state":"PA","lat":39.94510920400006,"lon":-75.158680285434,"geom_source":"nps_gis"},"listed_date":"1994-10-12","is_nhl":true,"nhl_designated_date":"1994-10-12","areas_of_significance":["Science"],"significance_levels":["national"],"summary":{"what_it_is":"A three-and-a-half-story brick rowhouse at 1008 Clinton Street in Philadelphia, Pennsylvania, with a Flemish bond facade, marble basement cladding and a semicircular fanlight at the entrance. The document says the house was built between 1835 and 1836.","why_significant":"The house is significant as the rented residence and office of geologist J. Peter Lesley from 1869 to 1896, where he directed the Second Geological Survey of Pennsylvania and edited its reports. The nomination argues that Lesley was a nationally important geologist, and that his survey work, which produced 120 volumes, is the basis for the listing.","narrative":"Built between 1835 and 1836 as a three-story brick house on Clinton Street in Philadelphia, the property has a Flemish bond facade, marble basement cladding and a fanlight at the entrance. From 1869 to 1896 it served as the rented home and office of geologist J. Peter Lesley, who was Director of the Second Geological Survey of Pennsylvania from 1874 to 1896. Here he wrote, drew and edited the survey's reports, which totaled 120 volumes produced by his assistants over two decades. Lesley had earlier written A Manual of Coal and The Iron Manufacturer's Guide, and his work on coal, iron and oil deposits made him one of the leading geologists of his day. The house is valued for its link to that survey work and to Lesley's national reputation in the history of science. Lesley himself never owned the property.","period_of_significance":"1869-1896","architect_builder":null,"architectural_style":"Mid-19th Century Greek Revival","criteria":["B"],"status_note":"The house is used as a single-family residence and was altered to accommodate up to three apartments; it appears in excellent condition and has a facade easement.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:30.210308-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/94001646_NHL.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/94001646/04932437c8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/94001646/04932437c8-1600.webp","licence":"Public domain","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:1008_Clinton_Philly.JPG\" rel=\"noopener\">Smallbones</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:1008_Clinton_Philly.JPG"},"district":{"nrhp_refnum":"84003563","name":"Washington Square West Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/washington-square-west-historic-district-84003563/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71994371","wikipedia":"https://en.wikipedia.org/wiki/J._Peter_Lesley_House","wikidata":"https://www.wikidata.org/wiki/Q6106777"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/philadelphia/lesley-j-peter-house-94001646/"}