| Letter | Year |
|---|---|
| September 1946 – Vol. 27, No. 9 – Canada and the United States | September 1946 |
| August 1946 – Vol. 27, No. 8 – Conservation of Soil | August 1946 |
| July 1946 – Vol. 27, No. 7 – Canadian Women | July 1946 |
| June 1946 – Vol. 27, No. 6 – International Trade | June 1946 |
| May 1946 – Vol. 27, No. 5 – Airway Transport | May 1946 |
| April 1946 – Vol. 27, No. 4 – Income Tax | April 1946 |
| March 1946 – Vol. 26, No. 3 – Education | March 1946 |
| February 1946 – Vol. 27, No. 2 – Money and Inflation | February 1946 |
| January 1946 – Vol. 27, No. 1 – Standards of living | January 1946 |
| December 1945 – Vol. 26, No. 11 – Electrical Developement | December 1945 |