Zimmermann, Johann Georg. — Ueber die Einsamkeit. [4 volumes].
Hildesheim, Zürich, New York, Olms-Weidmann, 2008 20.5 x 12.5 cm. 4 volumes, navy blue cloth bindings with red title labels, gilt lettering on spines; Text in German, fine condition, see picture. 4-volume reprint edition with an introduction by Paul Heinemann, published within the series Historia Scientiarum (Fritz Thyssen Stiftung). Introduction and facsimile reprints of the original Leipzig 1773-1785 editions. ISBNs: Vol. 1: 9783487134604, Vol. 2: 9783487134611, Vol. 3: 9783487134628, Vol. 4: 9783487134635.