EN 
| Letter | Year |
|---|---|
| Vol. 69, No.1 – Jan./Feb. 1988 – Changes in Management | Jan/Feb 1988 |
| Vol. 68, No. 6 – Nov./Dec. 1987 – The Strength of Enthusiasm | Nov/Dec 1987 |
| Vol. 68, No. 3 – Sept./Oct. 1987 – Making Up Our Minds | Sep/Oct 1987 |
| Vol. 68, No. 4 – July/August 1987 – The Great Co-operators | Jul/Aug 1987 |
| Vol. 68, No. 6 – May/June 1987 – The Functions of Formality | May/Jun 1987 |
| Vol. 68, No. 2 – March/April 1987 – Living with Uncertainty | Mar/Apr 1987 |
| Vol. 68, No. 1 – Jan./Feb. 1987 – A Measure of Success | Jan/Feb 1987 |
| Vol. 67, No. 6 – Nov./Dec. 1986 – Learning For Our Times | Nov/Dec 1986 |
| Vol. 67, No. 5 – Sept/Oct. 1986 – In Praise of Engineering | Sep/Oct 1986 |
| Vol. 67, No. 4 – July/August 1986 – The Art of Negotiation | Jul/Aug 1986 |