MusicSack (archive) has a "C.A. Aadler", music teacher and organ builder from ca.1846–1850, Rhode Island. Charles A. Adler was a music teacher in Providence, Rhode Island. He is listed in business catalogs for that city in the 1850s and 60s and also served as a school examiner including at Smithville Seminary. He was born in Zittau, Saxony and naturalized as a U.S. citizen on June 6, 1850.
