A collection of 133 letters, of which 130 were written by Egidio Foscarari; the remaining 3 letters are responses written by Giovanni Morone.
Edited from the original letters, most of which are held at the Archivio vaticano.
1 errata leaf tipped in.
Letters and introductory matter in Italian; includes a summary in German (pages 253-255) and a summary in English (pages 256-258).