Founder of analytic psychology. TLS in German, signed “C. J. Jung,” one page, 8.25 x 11.5, Prof. Dr. C. J. Jung letterhead, December 9, 1939. Untranslated letter to a lady. In fine condition, with expected mailing folds, some minor creasing to top edge and a bold signature. COA John Reznikoff/PSA/DNA and R&R COA.