I added the below image and caption to the Trombone History Timeline (17th century, 1601-1625).

c. 1616—Brussels, Belgium: An artist from the studio of Sallaert includes a trombone in the below drawing that appears to be either a preparatory sketch or a copy of the more famous 1616 Procession by Sallaert (see below image; public domain) (Van Sprang, Pictura Nova, 2014, vol. 2, no. F6, ill. 95).