Sasso, Armano and a few other Italian agents such as Abbate Tata, corresponded with Abraham Hume about potential works of art for his collection, in particular regarding works by Italian but also some Dutch, Flemish and Spanish artists. The letters written in 1787 are addressed to Abraham Hume c/o Mr. Jenkins in Rome. The rest were sent to addresses in England. Some letters include descriptions, prices and locations or current owners of individual works which were offered to Hume but not necessarily acquired. There are descriptions, details of transactions and details of transport arrangements for those works he did acquire for his collection. The letters also contain references to natural history specimines, mainly minerals, which Hume also collected.
The letters are in Italian however English summaries exist for about half the letters. Abraham Hume's letters to both men are copy letters. There are a few letters from other dealers.