Curt Sachs
1881-1959
German-born but American-domiciled musicologist. He was one of the founders of modern organology (the study of musical instruments), and is probably best remembered today for co-authoring the Sachs-Hornbostel scheme of musical instrument classification with his fellow scholar Erich von Hornbostel. (Wikipedia)
H. J. Moser, Geschichte der deutschen Musik in zwei Bänden
1921
Zeitschrift für Ästhetik und allgemeine Kunstwissenschaft 15