found: If ye would hear the angels sing, 2000:t.p. (Martha Shaffer)
found: BL database, 15 July 2003(hdg.: Shaffer, Martha, 1946-)
found: A year in Saint Louis, 2013:container (Martha Schaffer, chamber organ)
found: Christmas from Saint Louis, 2011:container (Martha Shaffer (USA); composer of If ye would hear the angels sing) booklet, page 6 (Martha Shaffer; rehearsal accompanist for the Saint Louis Chamber Chorus since 1991; educated at Albright College, Reading, PA; moved to St. Louis in 1989; church musician)
