This is a collection of three books containing the correspondence of the Holy Roman Emperor Rudolph I. Most of his letters are composed to other vassals within the realm, but much of it has to do with the ecclesiastial affairs of the empires, his political dealings with Roman Papacy, international relationships relating to the state and to the Holy Land. Rudolph's work would help transition Germany out of the Medieval period, and he would be a forerunner for the coming Habsburg dynasty of Europe, which would come to sit upon the thrones of most of Western Europe. This work is an unparalleled glimpse into his thoughts and courtly behaviors.