found: 44 original piano duets, Haydn to Stravinsky, c1968:t.p. (Theodore Presser Company, Bryn Mawr, Pennsylvania)
found: Two centuries of American musical composition, 1926:t.p. (Theodore Presser Co., Philadelphia, Pa.)
found: Theodore Presser Company WWW site, July 12, 2007:Our History (Theodore Presser Company, founded 1883 in Lynchburg, Va.; moved to Philadelphia in 1884; major acquisitions included the John Church Company (1930), the Oliver Ditson Company (1931), and Elkan-Vogel (1972))
found: Email from Rachelle Gayer on behalf of Jackie Bach, Sales Associate for Theodore Presser, June 8, 2015(Theodore Presser Company moved from Bryn Mawr to King of Prussia in February 2001)
found: Email from Daniel Duff, VP, Publishing, Theodore Presser Company, July 29, 2015(Theodore Presser Company moved from Philadelphia to Bryn Mawr in 1951)
