{"nrhp_refnum":"92000021","name":"Interstate Forwarding Company Warehouse","other_names":[],"category":"building","location":{"address":"3200 Main St.","address_restricted":false,"city":"Dallas","county":"Dallas County","state":"TX","lat":32.78486008900006,"lon":-96.77719869299995,"geom_source":"nps_gis"},"listed_date":"1992-02-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Transportation","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A six-story reinforced concrete and brick warehouse with a sub-basement at 3200 Main Street, near downtown Dallas, Texas, built in 1913 by local developers Milam and Connor.","why_significant":"The building was constructed to serve as Dallas' first U.S. Customs warehouse after Dallas was named a port of entry in 1913, which ties it to the city's growth in commerce and transportation. It is also a distinctive and relatively intact local example of Chicago School influenced industrial concrete-frame construction.","narrative":"This six-story warehouse at the corner of Main and Murray Streets, east of downtown Dallas, was built in 1913 of reinforced concrete with brick infill. It has a sub-basement, large industrial steel windows, mushroom-capital columns, an oversized freight elevator and an interior dock where railroad cars could enter and unload. Developers B.D. Milam and Ed C. Connor built it just as Dallas was designated a U.S. Customs port of entry, and it served as the city's first customs warehouse while also leasing space to manufacturers. Goods could be stored under bond there, letting importers pay duties only on what they removed. The Interstate Forwarding Company was its first major tenant, from 1913 to 1920. The plain, fireproof design is an example of Chicago School influenced industrial construction, and the building keeps a high degree of integrity. It remains the tallest structure in a district of early twentieth-century industrial buildings, and it was undergoing redevelopment at the time of listing.","period_of_significance":"1913-1941","architect_builder":"Unknown (built by the Milam/Connor partnership; no architect found)","architectural_style":"Late 19th and Early 20th Century American Movements/Commercial style","criteria":["A","C"],"status_note":"Described as in a remarkably fine state of preservation and undergoing redevelopment, with the developer intending to retain the original exterior appearance.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:20.919386-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/27/9717/40971727/content/electronic-records/rg-079/NPS_TX/92000021.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/92000021/b3913caaff-800.webp","url_1600":"https://nationalhistoricalregister.com/media/92000021/b3913caaff-1600.webp","licence":"CC BY-SA 3.0","author":"Jeffrey Beall","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Interstate_Forwarding_Company_Warehouse.JPG\" rel=\"noopener\">Jeffrey Beall</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:Interstate_Forwarding_Company_Warehouse.JPG"},"district":{"nrhp_refnum":"100009082","name":"Deep Ellum Historic District","url":"https://nationalhistoricalregister.com/districts/texas/deep-ellum-historic-district-100009082/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/40971727","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q110001833"},"indexable":true,"url":"https://nationalhistoricalregister.com/texas/dallas-county/interstate-forwarding-company-warehouse-92000021/"}