col. 183 (Our fifth Opera was the Olimpiade, in which they retained most of Pergolesi's Songs & yet 'tis gone already, as if it had been a poor thing of Galuppi's. Two nights did I enjoy it all alone, snugg in a Nook in the Gallery, but found no one in those regions had ever heard of Pergolesi, nay,
I heard several affirm it was a Composition of Pescetti's: now there is a 6th sprung up by the name of Cefalo & Procri (Thomas Gray's letter to lohn Chute, 24 May, 1742))
Annals of opera, 1597-1940, 3. ed., London, Calder,
1978 xxv, 1756 p.
London stage 1660-1800
The London stage 1660-1800 : a calendar of plays, entertainments & afterpieces together with casts, box-receipts and contemporary comments : compiled from the playbills, newspapers and theatrical diaries of the period, Carbondale, Ill., Southern Illinois University Press,