It is hard to tell from the Reclam edition, but this book was actually written by Johann Gottfried Herder, Johann Wolfgang von Goethe, Paolo Frisi (in German translation), and Justus Möser. Hans Dietrich Irmscher is the editor, not the author. (The book was first published in 1773, long before Irmscher's lifetime.)

Several catalogs incorrectly list Hans Dietrich Irmscher as the author of this work. In fact he is the editor of the Reclam edition. The correct authors are Johann Gottfried Herder, Johann Wolfgang von Goethe, Paolo Frisi, and Justus Möser.