found: Anderson, M. The art of Marian Anderson [SR] p1986:label (Lawrance Collingwood) container (conductor)
found: Marian Anderson [SR], p1993:container, notes (conducted by Lawrence Collingwood)
found: Grove Music Online, Dec.12, 2007(Collingood, Lawrance (Arthur); b. London, 14 Mar. 1887; d. Killin, Perthshire, 19 Dec. 1982; English conductor and composer)
found: Feodor Chaliapin song book [SR], p1992:p. 6 of notes (conducted by Lawrance A. Collingwood)
found: Baker's biog. dict. of musicians (8th ed.), 1992(Collingwood, Lawrance (Arthur); b. 1887, d. 1982)