Currently there are 37 of the 538 signatures in the collection digitized. It is the largest of the foreign (non-Latin) language collections and reflects Stefano Borgia's interest in sending missionaries to China. The bulk of the books are printed, and two are, actually, in Japanese, Borg.cin.501, 520. The collection of Antonio Montucci (†1829) was acquired by the Congregazione de Propaganda Fide, including his hand-engraved printing blocks for Chinese. This subcollection is catalogued in Borg.cin.396.

To the right is the first page of Borg.cin.394, a letter from the court of King George III of England to the Chinese emperor. The hand-written transliterations are in the hand of Montucci himself, made when he copied the text while still in London, probably in 1804.

Biblioteca apostolica vaticana. (2011). Guida ai fondi manoscritti, numismatici, a stampa della Biblioteca vaticana. Biblioteca apostolica vaticana. pp. 363-365