I just added the below caption and image to the Trombone History Timeline (19th century, 2nd half).
1885—Germany: Artist Hugo Kauffmann’s artistic depiction of musicians includes a trombonist (see below image; public domain) (special thanks to Whelden Merritt).
![](http://cdn-617fc9a2c1ac186784d32f45.closte.com/wp-content/uploads/2023/06/kauffmann.jpg)