EN 
| Letter | Year |
|---|---|
| July 1957 – Vol. 38, No. 7 – On Writing Clearly | July 1957 |
| June 1957 – Vol. 38, No. 6 – Canada’s Ninetieth Birthday | June 1957 |
| May 1957 – Vol. 38, No. 5 – Some Uses of Experience | May 1957 |
| April 1957 – Vol. 38, No. 4 – On Using Soil Wisely | April 1957 |
| March 1957 – Vol. 38, No. 3 – Rumour, False Report and Propaganda | March 1957 |
| February 1957 – Vol. 38, No. 2 – The Human Brain is Not Obsolete | February 1957 |
| January 1957 – Vol. 38, No. 1 – Let’s Avoid Stress | January 1957 |
| December 1956 – Vol. 37, No. 12 – On Being a Mature Person | December 1956 |
| November 1956 – Vol. 37, No. 11 – Reducing Waste | November 1956 |
| October 1956 – Vol. 37, No. 10 – How the Banks Serve the People | October 1956 |