The following is from a review at the bottom of the page on

“As detailed in the booklet, the American Opera Society had engaged Sir Thomas Beecham to conduct the complete work in two parts, with separate performances of "La prise de Troie" and "Les Troyens a Carthage" scheduled in New York, Philadelphia and Washington DC during December 1959 and January 1960. Beecham's behavior as described sounds like he didn't really want to be there, and he skipped most of the rehearsals and some of the performances. It must have been stressful for the performers, who I am guessing had been anticipating working with the famed English conductor and must have been dismayed by his boorish behavior and his last-minute withdrawal from several of the performances. The performances including the ones from Dec.29, 1959 and Jan.12, 1960 preserved in this set are from the New York run and were conducted by Robert Lawrence, who had done the musical preparation. The Philadelphia performances were cancelled and there were various logistical hardships but you would never know it from the result.”