found: Music in Holland, 1959:p. 177 (Main Broadcasting Choir; Groot Omroepkoor; Netherlands Radio, Hilversum)
found: Concertgebouworkest. The Royal Concertgebouw Orchestra with famous guest conductors [SR] p1997:container (the Chorus of the Dutch Radio Union; recorded June 23, 1955)
found: Tansman, A. Isaiah, the prophet [SR] 1956?:labels (Radio Philharmonic Choir of Hilversum)
found: Leoncavallo, R. Gli Zingari [SR] 197-:label (Chorus of Holland Radio)
found: LCCN r67-1518(hdg.: Hilversum, Netherlands. Nederlandse Radio-Unie. Radio Filharmonisch Koor; usage: Netherlands Radio Chorus)
found: LCCN r67-944(hdg.: Hilversum, Netherlands. Nederlandse Radio-Unie. Groot-Omroep Koor; usage: Netherlands Radio Chorus)
found: Mendelssohn-Bartholdy, F. Music to Shakespeare's play A midsummer night's dream [SR] p1965:label (Netherlands Radio Choir)
found: Stockhausen, K. Donnerstag [SR] p1983:booklet (Rundfunkchor Hilversum)
found: LC manual auth. cd.(hdg.: Nederlandse Omroep Stichting. Chorus)
found: Schwann artist issue, 10th ed.(Netherlands Radio Chorus)
found: Bielefelder Kat., 1975,no. 2: p. 191 (Koor d. Ned. Rad.)
found: Dutch choral music, 1979?(Radio Chamber Choir)
found: Wagenaar, J. De schipbreuk [SR] 1982:labels (Omroepkoor) container (NOS Omroepkoor, in photo caption and notes heading; also NOS-Omroepkoor with "NOS" in logo form)
found: Keulen, G. van. Violin concerto ... [SR] 1984?:label (Large Radio Choir)
found: Mascagni, P. Nerone [SR] 1987?:labels (Coro della Radio Televisione Olandese)
found: Mahler, G. Das klagende Lied [SR] 1973:labels (Niederländischer Rundfunkchor)
found: Henkemans, H. Music, 1990:container (NOS Radio Choir)
found: Tympan, 1994:label (Netherlands Radio Choir)
found: Beethoven, L.v. Missa solemnis [SR] 1984?, p1979:labels (Gr. Rundfunkchor N.O.S. Hilversum) container (Rundfunkchor Hilversum; Grosser Rundfunkchor der N.O.S. Hilversum; Radio Chorus of the N.O.S., Hilversum; Grand Chœur de la Radiodiffusion de la N.O.S., Hilversum; Gran coro della Radio del N.O.S., Hilversum)
found: European music directory, 1999:v. 1, p. 84 (Groot Omroepkoor)
found: E-mail from Office manager Groot Omroepkoor, May 16, 2007(NOS (Netherlands Broadcasting Corporation) is the company our choir was part of in the past ... It is the same choir. It's always has been Groot Omroepkoor ... In the past the broadcasting corporations put NOS in front of the name to let people know it was a radio choir)
found: Schumann, R. Szene aus Goethes Faust [SR] 2009:container (Netherlands Radio Choir) insert (Netherlands Radio Choir; Le Grand Chœur de la Radio néerlandaise; Der Niederländische Rundfunkchor; Groot Omroepkoor)
