Jorge Bolet's only appearance in the fabled opera house in Buenos Aires was on Saturday, 21 July 1979. The programme consisted of Bach/Busoni Ciaccona, Liszt's Sonata in B minor and his Transcendental Études 7, 6, 12, 9 and 8. The Colón was performing an early opera by Verdi, I due Foscari (premièred on Tuesday 17th - it had first been performed there in 1850). The Argentinian paper of record La Nación seems not to have carried a review of JB's recital (so far as I can see, but I'm working on it...)
The Thirty Nine Steps, a British 1978 thriller based on the novel by John Buchan, was playing in cinemas. On 19 July, British Minister of Affairs at the Foreign Office Nicholas Ridley arrived at Ezeiza airport, Buenos Aires, to be met by Carlos Cavándoli and Hugh Carless (chargé d'affaires at the British Embassy, where he monitored the disputed sovereignty of islands in the Beagle Channel, and the Falklands), before flying on the next day to the Falkland Islands (*1977-79 page for more details).