{"nrhp_refnum":"84001811","name":"Main Street/Market Square Historic District (Boundary Increase)","other_names":["See Also:Main Street/Market Square Historic District"],"category":"district","location":{"address":"110 Milam, 112-114 Milam, 202-204 Milam, 715 Franklin","address_restricted":false,"city":"Houston","county":"Harris County","state":"TX","lat":29.76321800000005,"lon":-95.36125579680584,"geom_source":"nps_gis"},"listed_date":"1984-02-23","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"Main Street/Market Square Historic District is a historic district in downtown Houston, Harris County, Texas. The available record is a boundary increase entry that lacks the core nomination form, so no construction dates or builders are given.","why_significant":"The available pages do not include the statement of significance. They show only that the district was listed and later lost a contributing building, the John Baker Building, to demolition in 1992, which federal reviewers warned could threaten the district's status.","narrative":"Main Street/Market Square Historic District is an area of historic commercial buildings in downtown Houston, Texas. This entry covers a boundary increase to the district, which was listed in February 1984. The nomination form, photographs and map are missing from the file, so the available pages say little about the district's architecture or the reasons for its significance. What remains is correspondence from 1992. In it, the Texas Historical Commission reported that the John Baker Building, a contributing property at Travis and Preston streets, was demolished on April 13, 1992, and asked that it be removed from the Register. A newspaper account from the same period describes the building as about 124 years old and empty. It reports that federal architects had warned city officials that further losses of historic structures in the district could put its historic district status at risk. The city had adopted a moratorium on demolishing historic structures in the district.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"The John Baker Building, a contributing property at Travis and Preston streets, was demolished on April 13, 1992, and the Texas Historical Commission asked that it be removed from the Register. The district itself remains listed.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:19.199034-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/82/9723/40972382/content/electronic-records/rg-079/NPS_TX/84001811.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/84001811/ababf1e8cc-800.webp","url_1600":"https://nationalhistoricalregister.com/media/84001811/ababf1e8cc-1600.webp","licence":"CC BY 3.0","author":"Ed Uthman, Houston, Texas, USA","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Market_Square_Houston_(HDR).jpg\" rel=\"noopener\">Ed Uthman, Houston, Texas, USA</a>, <a href=\"https://creativecommons.org/licenses/by/3.0\" rel=\"license noopener\">CC BY 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Market_Square_Houston_(HDR).jpg"},"district":{"nrhp_refnum":"83004471","name":"Main Street/Market Square Historic District","url":"https://nationalhistoricalregister.com/districts/texas/main-street-market-square-historic-district-83004471/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/40972382","wikipedia":"https://en.wikipedia.org/wiki/Main_Street_Market_Square_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q6736072"},"indexable":true,"url":"https://nationalhistoricalregister.com/texas/harris-county/main-street-market-square-historic-district-boundary-increase-84001811/"}