Material relating to ECHO Institute and Jean Claude Roché. Correspondence to and from: Jeffery Boswall, John Walton, Poul Bondesen, Sten Wahlström, Jean Claude Roché, Nils Dahlbeck, Lorenz Ferdinand, Carl Weismann, Gwen [?], E D H Johnson, John Burton, Patrick [?].
Material relating to BBC Natural History Unit programme 'Music in Bird Song', report entitled 'Visit to Czechoslovakia', report 'Visit to Cornell University and other contacts in North America', contracts between BBC and Cornell University, catalogue 'Library of Natural Sounds' Cornell University...
Cartoon clipping from a magazine, list 'Species to be recorded and re-recorded' and other handwritten notes, photocopy of article 'Can they make stereo Records from old mono masters?' The Gramophone (March 1969), 4 black and white photographs of maps, BBC Engineering Information Service newslette...