{"nrhp_refnum":"07000951","name":"Biberman Building","other_names":[],"category":"building","location":{"address":"611-619 N. 15th St.","address_restricted":false,"city":"Philadelphia","county":"Philadelphia","state":"PA","lat":39.96427707300006,"lon":-75.16267858099997,"geom_source":"nps_gis"},"listed_date":"2007-09-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":[],"significance_levels":[],"summary":{"what_it_is":"A six-story reinforced concrete factory building with red brick cladding and limestone accents at 611-619 N. 15th Street, at the southeast corner of N. 15th and Mt. Vernon Streets in Philadelphia, Pennsylvania. It was constructed in 1919-1920 to designs by architect LeRoy Rothschild.","why_significant":"The nomination argues the building is significant under Criterion A for industry as the headquarters and manufacturing plant of Biberman Brothers, Inc., a women's dress manufacturer whose L'Aiglon label was nationally distributed. It is presented as an example of Commercial Style industrial architecture using reinforced concrete, and the company is described as one of the leading women's dress makers in the region.","narrative":"Built in 1919-1920 to designs by Philadelphia architect LeRoy Rothschild, this six-story reinforced concrete factory on North 15th Street is faced in red brick with limestone accents. It was constructed for Biberman Brothers, Inc., a dressmaking firm that used the building as its headquarters, design center and main plant from 1920 into the late twentieth century. The company produced women's day dresses under the L'Aiglon label, which was distributed to department stores across the country during the 1920s. Its workforce reached several hundred employees, with a peak of 600 in 1933. The building is regarded as a local example of the Commercial Style, combining an exposed concrete frame with open floor plates and regularly spaced round columns. Its significance rests on its association with the region's garment industry and on its design as a fireproof, efficient factory. Later alterations include infilled windows, a removed seventh floor and a south-side ramp added for parking use.","period_of_significance":"1919-1957","architect_builder":"LeRoy Rothschild, architect","architectural_style":"Commercial Style","criteria":["A"],"status_note":"The building is presently vacant and awaiting rehabilitation by its current owner; it was converted to a parking garage in the late 20th century.","vacant_flag":true,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:10:27.164215-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/07000951.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/07000951/03fc427f7c-800.webp","url_1600":"https://nationalhistoricalregister.com/media/07000951/03fc427f7c-1600.webp","licence":"Public domain","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Biberman_Building_Philly.JPG\" rel=\"noopener\">Smallbones</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Biberman_Building_Philly.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71997488","wikipedia":"https://en.wikipedia.org/wiki/Biberman_Building","wikidata":"https://www.wikidata.org/wiki/Q4902995"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/philadelphia/biberman-building-07000951/"}