Notebook 1: September 1 to October 4, 1939
Notebook 2: October 5 to November 14, 1939
Notebook 3: November 15 to December 25, 1939
Notebook 4: December 26 to January 19, 1940
Notebook 5: January 20 to February 23rd, 1940
Notebook 6: June 9 to July 18, 1940
Notebook 7: September 20, 1940 to January 29, 1941.