10/20/1928 Campbell, Ronald Ian to Edison, Thomas Alva
(U.S. Congress; Howard, Esme) Awards & honors/clubs & societies; Cylinder phonograph [Attachment/Enclosure]
[Z150]  Science Museum, London, U.K.: Registry, Nominal File 614
[Z150P; TAEM 0:0]
Courtesy of the Trustees, Science Museum, London.