{"nrhp_refnum":"70000523","name":"Ohio Company Land Office","other_names":["Campus Martius Museum State Memorial","See Also:Marietta Histo"],"category":"building","location":{"address":"Washington and 2nd Sts., Campus Martius Museum","address_restricted":false,"city":"Marietta","county":"Washington County","state":"OH","lat":39.42125571500003,"lon":-81.46139959999994,"geom_source":"nps_gis"},"listed_date":"1970-11-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Politics/Government"],"significance_levels":["state"],"summary":{"what_it_is":"A small one-story hewn-log office building, 27' by 19', with a gable roof and a single fireplace, now located behind the Campus Martius Museum at Washington and Second Streets in Marietta, Ohio. It is thought to date from 1788.","why_significant":"The building is thought to be among the first erected by the Ohio Company in 1788, near the walls of the Campus Martius fort. Rufus Putnam used it while surveying and dividing the Company's 1,800,000-acre grant among its members. It is tied to the first permanent settlement and seat of government in the Northwest Territory after the Ordinance of 1787.","narrative":"This small hewn-log building in Marietta, Ohio, served as the Ohio Company Land Office. It is a one-story, gable-roofed structure measuring 27 by 19 feet, with a single fireplace and a sided exterior. It is thought to be one of the first buildings put up by the Ohio Company, along with the Campus Martius blockhouses, in the summer and fall of 1788. Rufus Putnam, a professional surveyor and company superintendent, worked here surveying and dividing the company's 1,800,000-acre grant in the Northwest Territory into parcels for its members. Marietta was the first permanent settlement and seat of government established in the territory after the Ordinance of 1787. After the lots were sold to individual members in 1796, Putnam himself owned the building. The Colonial Dames of America presented it to the State of Ohio in 1953. The Ohio Historical Society repaired and furnished it, and it is now open to the public behind the Campus Martius Museum.","period_of_significance":"1788","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Rated in good condition; repaired and furnished by the Ohio Historical Society after its 1953 acquisition and open to the public as part of a memorial and museum. Owned by the State of Ohio.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:10.416577-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/70000523.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/70000523/050232057f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/70000523/050232057f-1600.webp","licence":"Public domain","author":"Roseohioresident","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Ohio_Company_Land_Office_2010_08_25.JPG\" rel=\"noopener\">Roseohioresident</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Ohio_Company_Land_Office_2010_08_25.JPG"},"district":{"nrhp_refnum":"01000903","name":"Marietta Historic District (Boundary Increase)","url":"https://nationalhistoricalregister.com/districts/ohio/marietta-historic-district-boundary-increase-01000903/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71991951","wikipedia":"https://en.wikipedia.org/wiki/Ohio_Company_Land_Office","wikidata":"https://www.wikidata.org/wiki/Q7080782"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/washington-county/ohio-company-land-office-70000523/"}