| Description | /1. RD North American lecture tour,correspondence and organisation; 1978 - 1979
/2. RD North American lecture tour, misc documents; 1979
/3. RD North American lecture tour, correspondence and organisation; 1978 - 1979
/4. RD North American lecture tour correspondence and documents and misc; 1979 - 1980
/5. RD, lectures correspondence; 1979
/6. RD, personal correspondence; 1979
/7. RD, personal correspondence; 1979 |