{"nrhp_refnum":"76000696","name":"Lillie, Frank R., House","other_names":["Lillie House"],"category":"building","location":{"address":"5801 Kenwood Ave.","address_restricted":false,"city":"Chicago","county":"Cook County","state":"IL","lat":41.78947384200006,"lon":-87.59288172999999,"geom_source":"nps_gis"},"listed_date":"1976-05-11","is_nhl":true,"nhl_designated_date":"1976-05-11","areas_of_significance":["Science"],"significance_levels":["national"],"summary":{"what_it_is":"A brick house at 5801 Kenwood Avenue on the University of Chicago campus in Chicago, Illinois, built in 1904 and designed by the Chicago firm of Irving K. Pond and Allen Pond.","why_significant":"It was the home of embryologist Frank R. Lillie from 1904 until his death in 1947. Lillie made important contributions to embryology and helped build major American scientific institutions, including the Marine Biological Laboratory at Woods Hole and the Oceanographic Institute. The house is also an example of the Pond brothers' domestic work.","narrative":"Built in 1904 at 5801 Kenwood Avenue on the University of Chicago campus, this brick house was designed by the Chicago firm of Irving K. Pond and his brother Allen. Its irregular form, flat brick surfaces, diamond-pattern brickwork, odd gables and quoins, and mix of gabled and flat roofs reflect the Ponds' distinctive style. The house was the home of Frank R. Lillie, a leading embryologist, from its construction until his death in 1947. Lillie taught at the University of Chicago for decades and chaired its zoology department. His research covered fertilization and the role of sex hormones in differentiation. He also directed the Marine Biological Laboratory at Woods Hole, helped establish its Oceanographic Institute, and served as president of the National Academy of Sciences from 1935 to 1939. The university took over the house in 1956 and has used it for various functions. The exterior remains unaltered, while the interior has been changed for teaching use.","period_of_significance":"1904-1947","architect_builder":"Pond and Pond","architectural_style":null,"criteria":[],"status_note":"Occupied and owned by the University of Chicago since 1956 for university functions; exterior unaltered, interior significantly altered; condition listed as excellent.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:35.465544-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/90/8915/28891590/content/electronic-records/rg-079/NPS_IL/76000696_NHL.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/76000696/e06202ff35-800.webp","url_1600":"https://nationalhistoricalregister.com/media/76000696/e06202ff35-1600.webp","licence":"CC BY-SA 3.0","author":"TonyTheTiger (t/c/bio/WP:CHICAGO/WP:LOTM)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:20080909_Frank_R._Lillie_House.JPG\" rel=\"noopener\">TonyTheTiger (t/c/bio/WP:CHICAGO/WP:LOTM)</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:20080909_Frank_R._Lillie_House.JPG"},"district":{"nrhp_refnum":"79000824","name":"Hyde Park-Kenwood Historic District","url":"https://nationalhistoricalregister.com/districts/illinois/hyde-park-kenwood-historic-district-79000824/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28891590","wikipedia":"https://en.wikipedia.org/wiki/Frank_R._Lillie_House","wikidata":"https://www.wikidata.org/wiki/Q14687506"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/cook-county/lillie-frank-r-house-76000696/"}