Background
Source: Wikipedia
Carl Engel (July 21, 1883 – May 6, 1944) was a French-born American pianist, composer, musicologist and publisher from Paris. He was also president of G. Schirmer, Inc., a writer on music for The Musical Quarterly, and chief of the Music Division of the Library of Congress.

![Cover of Musical Instruments [1876]](https://www.gutenberg.org/cache/epub/54537/pg54537.cover.medium.jpg)
![Cover of Musical Instruments [1908]](https://www.gutenberg.org/cache/epub/65505/pg65505.cover.medium.jpg)