The correspondence presented here extends over a period of almost two decades (1662--1681) and is one of the most revealing literary exchanges of the 17th century. The hitherto unpublished and largely unknown texts supply rich source material for reconstructions of the history of the author's works and for studies on social history and the history of mentality. Not least, they provide new access to the work of one of the most influential writers and literary managers after Opitz and one of the most important German authors of the 17th century.