This disc is available as part of the Decca Classics Box Set of George Guest's recordings with St John's. More information on the set is available here.

The album was also included in the 'Six Great Masses' collection by Argo. The following letter was sent to the Dean of St John's (the Revd S. W. Sykes) by Robert Armstrong (Secretary to the Prime Minister):

10 Downing Street
Whitehall
12 October 1972

Dear Mr Dean,

The Prime Minister [Sir Edward Heath] has asked me to thank you for your letter of 11 October. The recordings of Haydn Masses which he gave to the Pope were the six recordings published by Argo; and of course, as you know, the Saint John's College Choir are included in five of the six. The Prime Minister is glad to think that it may please the Choir to know that the sounds of their voices may well be echoing round the Vatican.

Yours sincerely,

Robert Armstrong