- Circular letter (Number 10, May 9, 1945)1
- Circular letter (Number 10, October 1, 1947)1
- Circular letter (Number 10, September 1, 1946)1
- Circular letter (Number 11, February 18, 1946)1
- Circular letter (Number 11, January 31, 1945)1
- Circular letter (Number 11, March 27, 1945)1
- Circular letter (Number 11, May 15, 1945)1
- Circular letter (Number 11, May 27, 1946)1
- Circular letter (Number 11, November 1, 1947)1
- Circular letter (Number 11, October 1, 1946)1
- Circular letter (Number 12, April 2, 1945)1
- Circular letter (Number 12, December 1, 1947)1
- Circular letter (Number 12, February 1, 1945)1
- Circular letter (Number 12, February 19, 1946)1
- Circular letter (Number 12, June 20, 1946)1
- Circular letter (Number 12, May 19, 1945)1
- Circular letter (Number 12, November 1, 1946)1
- Circular letter (Number 13, April 4, 1945)1
- Circular letter (Number 13, December 1, 1946)1
- Circular letter (Number 13, February 21, 1946)1