- Circular letter (Number 2, February 11, 1946)1
- Circular letter (Number 2, January 7, 1946)1
- Circular letter (Number 20, February 27, 1945)1
- Circular letter (Number 20, June 9, 1945)1
- Circular letter (Number 21, June 20, 1945)1
- Circular letter (Number 29, July 22, 1945)1
- Circular letter (Number 3, March 1, 1947)1
- Circular letter (Number 33, April 8, 1945)1
- Circular letter (Number 36, April 19, 1945)1
- Circular letter (Number 36, August 14, 1945)1
- Circular letter (Number 37, April 20, 1945)1
- Circular letter (Number 37, July 1, 1946)1
- Circular letter (Number 38, August 1, 1946)1
- Circular letter (Number 4, April 1, 1947)1
- Circular letter (Number 4, January 25, 1945)1
- Circular letter (Number 4, March 11, 1946)1
- Circular letter (Number 44, October 26, 1945)1
- Circular letter (Number 5, January 14, 1945)1
- Circular letter (Number 5, May 1, 1947)1
- Circular letter (Number 51, November 16, 1945)1