{"nrhp_refnum":"13000248","name":"Firstside Historic District (Boundary Increase)","other_names":[],"category":"district","location":{"address":"Roughly bounded by the Boulevard of the Allies, Ft. Pitt Blvd., Grant & Stanwix Sts.","address_restricted":false,"city":"Pittsburgh","county":"Allegheny County","state":"PA","lat":40.43968762700004,"lon":-80.00156750336174,"geom_source":"nps_gis"},"listed_date":"2013-05-08","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry"],"significance_levels":["local"],"summary":{"what_it_is":"A city block of twelve contiguous commercial warehouse buildings, mostly three to five stories, on the north bank of the Monongahela River in downtown Pittsburgh, Allegheny County, Pennsylvania. The buildings were constructed between 1845 and 1914 and form part of the former Monongahela Wharf, the city's primary commercial waterfront.","why_significant":"The district is argued to be commercially significant for its role in Pittsburgh's river trade, since the Monongahela Wharf was the city's principal commercial wharf from the 1840s through the 1930s. The buildings are also presented as intact examples of late nineteenth and early twentieth century warehouse architecture in Pittsburgh, with the Conestoga Building at 1-7 Wood Street designed by Longfellow, Alden & Harlow as the most significant structure.","narrative":"Along the north bank of the Monongahela River in downtown Pittsburgh stands a row of twelve contiguous brick warehouses, mostly three to five stories high, built between 1845 and 1914. They were erected after a fire in 1845 destroyed much of the waterfront and formed part of the Monongahela Wharf, the city's principal commercial wharf from the 1840s through the 1930s. Goods were unloaded at the wharf and stored in these buildings for the river trade. Most early occupants were commission merchants, and the Oil Well Supply Company and glass manufacturer Alexander King were among later tenants. The row includes Greek Revival, Italianate, Queen Anne and Richardsonian Romanesque facades. The seven-story Conestoga Building at 1-7 Wood Street, completed in 1892 by Longfellow, Alden & Harlow, is the largest and most architecturally significant structure. The district's importance rests on its commercial history and on its intact warehouse architecture, which the nomination regards as rare in downtown Pittsburgh. The period of significance runs to 1938, when steamboat freighting declined.","period_of_significance":"1845-1938","architect_builder":"Longfellow, Alden & Harlow (architects, 1-7 Wood Street); G. A. Cochran (builder, 1-7 Wood Street); Frazier Brothers (builder, 239-241 Fort Pitt Boulevard)","architectural_style":"Greek Revival; Italianate; Queen Anne; Richardsonian Romanesque","criteria":["A","C"],"status_note":"Restoration work was underway at 243-245 Fort Pitt Boulevard at the time of the document; the rear of the Firstside buildings are on First Avenue, a one-lane, one-way alley.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:10:27.582074-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88001215.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/13000248/fe2f11a2b7-800.webp","url_1600":"https://nationalhistoricalregister.com/media/13000248/fe2f11a2b7-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Conestoga_Building_in_the_Firstside_Historic_District.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Conestoga_Building_in_the_Firstside_Historic_District.jpg"},"district":{"nrhp_refnum":"85001961","name":"Fourth Avenue Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/fourth-avenue-historic-district-85001961/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":null,"wikipedia":"https://en.wikipedia.org/wiki/Firstside_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q5454286"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/allegheny-county/firstside-historic-district-boundary-increase-13000248/"}