I just added the below image and caption to the Trombone History Timeline (16th century). Enjoy!

Late 16th century—Italy: A chalk drawing variously ascribed to Alessandro Allori, Agnolo Bronzino, the circle of Vasari, Baccio Bandinelli, Johannes Stradanus, and Bernardino Campi includes a man playing what appears to be a trombone among a group of musicians in a concert scene (see below image; public domain) (McCullagh 280; Art Institute of Chicago).