The correspondence of the Swiss reformer Heinrich Bullinger (1504-1575), the successor of Huldrych Zwingli, is of high importance for both theology and history. The corpus of Bullinger's correspondence is one of the largest of the sixteenth century (cf. data). The critical edition of this corpus has a long history.
Bullinger's works, like those of Zwingli, are published by the Zwingliverein. The edition of Bullinger's correspondence is affiliated with the Institute for Swiss Reformation History at the University of Zurich. The project is financed by the Swiss National Science Foundation (SNF) and the Reformed Church of the Canton of Zurich.