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22. Notice to aviators no. 5; May 1, 1941.

23. Notice to aviators no. 6; June 1, 1941.

24. Notice to aviators no. 7: July 1, 1941.

25. Notice to aviators no. 8; Aug. 1, 1941.

26. Notice to aviators no. 9; Sept. 1, 1941.

28. Notice to aviators no. 10; Oct. 1, 1940.

29. Notice to aviators no. 11; Nov. 1, 1940.

30. Notice to aviators no. 12; Dec. 1, 1940.