Our President in 1979/80 was:

Lord Ballantrae

Professor David Daiches presided and delivered the Toast to Sir Walter at our 71st Annual Dinner on Friday 1st March 1980 in The North British Hotel, Edinburgh

We are missing the 1980 Annual Bulletin

Brigadier Bernard Edward Fergusson, Baron Ballantrae, KT, GCMG, GCVO, DSO, OBE (6 May 1911 – 28 November 1980) was a British Army officer, a military historian and the last British-born Governor-General of New Zealand.

Text source: Wikipedia