http://www.musicweb.uk.net/hely/ (1901-1947), South Africa. Includes biography, bibliography, and discography. http://utopia.knoware.nl/~jsmeets/cgi-bin/ccd.cgi?comp=hoeller (1907-1987), Bamberg, Germany. Biography from the Classical Composers Database. http://www.musicweb.uk.net/hoffnung/ (1925-1959), Berlin, Germany. Includes biography, bibliography, discography, concerts, and online purchasing.