{"nrhp_refnum":"72000460","name":"Koster Site","other_names":[],"category":"site","location":{"address":"S of Eldred","address_restricted":false,"city":"Eldred","county":"Greene County","state":"IL","lat":39.20921076750005,"lon":-90.549154112543,"geom_source":"nps_gis"},"listed_date":"1972-06-19","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Prehistoric","Conservation","Education","Science"],"significance_levels":["national"],"summary":null,"photo":{"url_800":"https://nationalhistoricalregister.com/media/72000460/94a5c23fa9-800.webp","url_1600":"https://nationalhistoricalregister.com/media/72000460/94a5c23fa9-1600.webp","licence":"Public domain","author":"Arthur Greenberg","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:COLLEGE_STUDENTS_WORK_WITH_ARCHAEOLOGISTS_AT_%22KOSTER_DIG%22_AN_ANCIENT_INDIAN_BURIAL_SITE_-_NARA_-_552495.jpg\" rel=\"noopener\">Arthur Greenberg</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:COLLEGE_STUDENTS_WORK_WITH_ARCHAEOLOGISTS_AT_%22KOSTER_DIG%22_AN_ANCIENT_INDIAN_BURIAL_SITE_-_NARA_-_552495.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28892903","wikipedia":"https://en.wikipedia.org/wiki/Koster_Site","wikidata":"https://www.wikidata.org/wiki/Q16893638"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/greene-county/koster-site-72000460/"}