Signal Corps Technical Infomation Letter

Evedentely prior to Dec. 1, 1941 these were published quarterly, (No. 22 being published July 15- 1939) this is what that math would look like-

• 1, 2, 3, =1934
• 4 ,5 ,6, 7 =1935
• 8, 9, 10, 11, =1936
• 12, 13, 14, 15, =1937
• 16, 17, 18, 19, =1938
• 20, 21, 22, 23, =1939
• 24, 25, 26, 27, =1940
• 28, 29, 30, 31, =1941

Issues

Issue #1, December 1941

Issue #2, January 1942

Issue #3, February 1942

Issue #4, March 1942

Issue #5, April 1942

Issue #6, May 1942

Issue #7, June 1942

Issue #8, July 1942

Issue #9, August 1942

Issue #10, September 1942

Issue #11, October 1942

Issue #12, November 1942

Issue #13, December 1942

Issue #14, January 1943

Issue #15, February 1943

Issue #16, March 1943

Issue #17, April 1943

Issue #18, May 1943

Issue #19, June 1943

Issue #20, July 1943

Issue #21, August 1943

Issue #22, September 1943

Issue #23, October 1943

Issue #24, November 1943

Issue #25, December 1943

Issue #26, January 1944

Issue #27, February 1944

Issue #28, March 1944

Issue #29, April 1944

Issue #30, May 1944

Issue #31, June 1944

Issue #32, July 1944

Issue #33, August 1944

Issue #34, September 1944

Issue #35, October 1944

Issue #36, November 1944

Issue #37, December 1944

Issue #38, January 1945

Issue #39, February 1945

Issue #40, March 1945

Issue #41, April 1945

Issue #42, May 1945

Issue #43, June 1945

Issue #44, July 1945

Issue #45, August 1945