Found grouped together as is. Letter from Heinz Elsberg, 1967 November 13. Letter from Curt Wolowski on the back of a photocopy of his short biography, 1972 January 14. Postcard from Curt Wolowski, 1971 March 24. Letter from William W. Melnitz, Theater Department, State University of New York, Binghamton, 1971 January 21. Death announcement of Edward E. Seldis, 1970 December. Letter from Theodore H. Thiesing concerning Berstl's wife's death and his will, 1966 February 14. Letters from A.J. Roberts, 1966 December 12-1971 December 16. Letter from John E. Wengraf, 1964 September 20. Letter from Paul A. Gomperz, 1966 March 31. Letter from Oldga Sondern, 1971 July 29. Letters from Fabian Kelly, 1966 December 10-1969 January 2. Letters from Dr. Julius Katz, 1964 June 5-1964 October 20. A number of letters from unknown people.