Audio Archive. In 2019, Drexel University's MAD Dragon Music Group released 14 formerly-lost tracks from funk-soul group Nat Turner Rebellion that had been a part of the archive. It was reported in the April 2015 issue of Pro Sound News, (a NewBay Media publication), that "the building that houses the historic Sigma Sound Studios in Philadelphia has been sold for $1.55 million, with the intention of renovating the space for office, retail or residential use." The studios had closed for business in 2014, according to the www.philly.com website. When checked on April 9, 2015, the Sigma Sound Studios website was still available for viewing, but it has since been taken down. Legacy On October 15, 2015, the original building for Sigma Sound Studios was officially dedicated as a historic site by the City of Philadelphia. The historic site marker was placed at 212 N. 12th Street. On November 13, 2020 the Sigma Studios building (212 N 12th St) — birthplace of the famous “Philly Sound” — won a spot on the Philadelphia Register of Historic Places, protecting the beloved cultural landmark from demolition. Special Collections Research Center Information on Sigma Sound Studios exists at the Special Collections Research Center at Temple University in Philadelphia. The memorabilia available includes newspaper and magazine clippings, collected ephemera and other publications. There are also photographs of both the New York City and Philadelphia studios, as well as advertising and promotional materials which include "AddZest" materials that are primarily in Japanese. Additionally, there is a limited selection of several types of studio records, and clippings. References External links The defunct Sigmasound.com Web site from Archive.org Journal on the Art of Record Production - Capturing That Philadelphia Sound: A Technical Exploration Of Sigma Sound Studios 1968 establishments in Pennsylvania 2014 disestablishments in Pennsylvania Buildings and structures in Philadelphia Culture of Philadelphia Recording studios in the United States