{"nrhp_refnum":"95001374","name":"Gladstone Houses","other_names":[],"category":"building","location":{"address":"12962--12964 Cline Gulch Rd.","address_restricted":false,"city":"French Gulch","county":"Shasta County","state":"CA","lat":40.72087792900004,"lon":-122.58221885299997,"geom_source":"nps_gis"},"listed_date":"1995-11-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Engineering","Industry"],"significance_levels":["state"],"summary":{"what_it_is":"Two large Craftsman-style wood-frame houses on a 3.10-acre site at the end of Cline Gulch, northeast of French Gulch, Shasta County, California. The Upper House dates to about 1909 and the larger Lower Mansion to about 1912-1914; both were built at the Gladstone Mine.","why_significant":"The houses are tied to I. O. Jillson, a prominent Northern California gold mine owner, who built them while running the Gladstone Mine between 1901 and 1916. They are also attributed to Gustav Stickley, the leading figure of the American Arts and Crafts movement, and both appeared in The Craftsman magazine. Few Craftsman buildings exist in the Shasta County area, and none are known to be by a designer of Stickley's renown.","narrative":"Two Craftsman-style houses sit on a steep, wooded site at the end of Cline Gulch, northeast of French Gulch in Shasta County. Both were built for I. O. Jillson, owner of the Gladstone Mine, and are attributed to designer Gustav Stickley. The Upper House, from about 1909, is a story-and-a-half building with a steep gable roof. The larger Lower Mansion, built about 1912-1914, has an L-shaped plan and a triple-intersecting hipped roof. Both have redwood shingle walls, extensive interior woodwork, and rock or hillside foundations engineered with help from the mine's staff. Plans for the Upper House appeared in The Craftsman in 1909, and the Lower Mansion was featured in 1914. The houses are listed for their link to Jillson, whose mining operations contributed to the local economy, and for their Craftsman design. Few such buildings survive in the area. The Lower Mansion is vacant and in poor condition, while the Upper House is in fair condition and little altered.","period_of_significance":"1909-1916","architect_builder":"Stickley, Gustav (attributed); built by I. O. Jillson","architectural_style":"Craftsman","criteria":["B","C"],"status_note":"The Lower Mansion is in original but poor condition and vacant awaiting renovation; the Upper House is in fair condition. Both have been repaired to keep them weather tight.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:28.009628-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/95001374.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861924","wikipedia":"https://en.wikipedia.org/wiki/Gladstone_Houses","wikidata":"https://www.wikidata.org/wiki/Q85763622"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/shasta-county/gladstone-houses-95001374/"}