Detailed dates of material: 1956, 1978, 1979.
[9] p. Envelope 5/112 ; microfilm reel 059 ; Frames 0992 - 1002
"Eduard Erdmann (5 March 1896 – 21 June 1958) was a Baltic German pianist and composer" -- Wikipedia. Biographical information and an article by Lottie Krebs about Eduard Erdmann. Eduard Erdmann, pianist and composer (1896-1958) / Lottie Krebs
Eduard Erdmann