Letter from E H B Lefroy to W R Lang 1st December 1941, discussing wool samples for testing.wool - research wool - testing sheep breeding - history peppin-merino sheep world war ii, gordon institute of technology, lang, dr w. roy lefroy, mr e. h.b. kelley, mr r. b., cranmore park, western australia, wool - research, wool - testing, sheep breeding - history, peppin-merino sheep, world war ii