{"nrhp_refnum":"07000088","name":"Southern Spring Bed Company","other_names":[],"category":"building","location":{"address":"300 Martin Luther King, Jr., Dr.","address_restricted":false,"city":"Atlanta","county":"Fulton County","state":"GA","lat":33.749192348000065,"lon":-84.37574372499995,"geom_source":"nps_gis"},"listed_date":"2007-03-01","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Industry"],"significance_levels":["local"],"summary":{"what_it_is":"A complex of four industrial buildings at 300 Martin Luther King, Jr., Drive in downtown Atlanta, Fulton County, Georgia, built between 1920 and the 1950s for the Southern Spring Bed Company and since converted to loft apartments and commercial space.","why_significant":"The complex is significant for industry as one of the largest bed and seat manufacturers in the Southeast and as one of Atlanta's earliest and longest-operating spring bed companies. It is also significant for architecture as an example of early to mid-20th-century factory construction built to be fireproof, including a 1920 reinforced-concrete main building with mushroom columns.","narrative":"Four industrial buildings near Oakland Cemetery in downtown Atlanta once housed the Southern Spring Bed Company, a manufacturer founded in 1884. The centerpiece is a plain, two-story reinforced-concrete factory completed in 1920, with smooth concrete walls, steel casement windows and interior mushroom columns. Exposed half-columns on its south side show where later expansion was planned. A third floor was added in 1948. In 1935 the company added a heavy timber-and-steel building with brick walls, forming a U-shaped complex around a courtyard, and later acquired two brick buildings used for cotton and lint processing. The firm began with wooden spring beds, moved into metal beds in the 1920s, and by 1948 made automobile seats for a sizable share of the national market. It was among the largest bed and seat makers in the Southeast and operated at this site until 1977. After use by artists, developers rehabilitated the buildings in 1998 as apartments and commercial space.","period_of_significance":"1920-1956","architect_builder":null,"architectural_style":"Other: early 20th-century, fire-proof industrial construction","criteria":["A","C"],"status_note":"Rehabilitated into loft apartments and commercial space known as the \"Mattress Factory Lofts\"; the company closed in 1977.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:42.851341-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_GA/07000088.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/93208348","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q134322280"},"indexable":true,"url":"https://nationalhistoricalregister.com/georgia/fulton-county/southern-spring-bed-company-07000088/"}