{"nrhp_refnum":"85000564","name":"Lindsey Building","other_names":[],"category":"building","location":{"address":"25 S. Main St.","address_restricted":false,"city":"Dayton","county":"Montgomery County","state":"OH","lat":39.758596400000044,"lon":-84.19189537199998,"geom_source":"nps_gis"},"listed_date":"1985-03-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A twelve-story Commercial style office building at 25 South Main Street in the central business district of Dayton, Ohio, built around 1917 by Theodore Lindsey.","why_significant":"The nomination argues it displays the tripartite design and classically inspired detail typical of early twentieth-century high-rise buildings in Dayton. It also reflects the commercial growth of downtown Dayton in that period. Its tall, slender form on a narrow lot is described as unique among the city's remaining high-rises and as illustrating a transition from low-rise, pre-elevator Dayton to modern office towers.","narrative":"Rising twelve stories on the west side of South Main Street in downtown Dayton, the Lindsey Building dates to about 1917 and was built by Theodore Lindsey. Its brick-faced Commercial style design follows the tripartite pattern common to the city's early high-rises: a base, a long shaft, and a decorative crown. Because the lot is narrow, the building is unusually tall and slender, and most of its ornament is concentrated at the top, where a heavy terra cotta cornice projects outward. Over the years it housed savings and loan firms and various other commercial tenants. It was recognized for its architecture and for what it shows about the growth of Dayton's central business district. Standing among mostly low-rise neighbors, it illustrates the shift from the pre-elevator city to the later glass-and-steel office towers. The building currently stands vacant apart from a street-level retail store.","period_of_significance":"1900-","architect_builder":"Unknown; built by Theodore Lindsey","architectural_style":"Commercial style","criteria":["A","C"],"status_note":"Described as standing vacant except for a street-level retail store; condition marked excellent and unaltered.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:14.260428-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/85000564.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/85000564/437fe57b7d-800.webp","url_1600":"https://nationalhistoricalregister.com/media/85000564/437fe57b7d-1600.webp","licence":"CC BY-SA 3.0","author":"Photo by Greg Hume (Greg5030)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Lindsey_Building_-_Dayton,_Ohio_(2008).jpg\" rel=\"noopener\">Photo by Greg Hume (Greg5030)</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:Lindsey_Building_-_Dayton,_Ohio_(2008).jpg"},"district":{"nrhp_refnum":"100004316","name":"Downtown Dayton Historic District","url":"https://nationalhistoricalregister.com/districts/ohio/downtown-dayton-historic-district-100004316/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71990482","wikipedia":"https://en.wikipedia.org/wiki/Lindsey_Building","wikidata":"https://www.wikidata.org/wiki/Q6552866"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/montgomery-county/lindsey-building-85000564/"}