This database does not list the ca. 12,000 extant letters from and to Heinrich Bullinger separately. However, this database encorporates all correspondents (individual people and groups) as well as all places of correspondence. Furthermore one can find out how many letters a certain person wrote to/received from Bullinger, as well as the where and when of the correspondence. The incorporated data can only be provisional since only a small proportion of the letters have been edited so far. The interface is in English, but data and comments are in German. Please excuse this little inconvenience.