Today I added the below caption and image to the Trombone History Timeline (16th century). I will also be adding it to Angel Trombonists Throughout History: 56 Images. I think it’s a striking painting that really features the trombone. I wish I could find an image with a little higher resolution and a little better angle. The book I mention in the caption has a photo with a more direct angle, but the picture is black and white and smaller than this one.
c. 1600—Milan, Italy: Camillo Procaccini’s fresco in Milan’s church, Sant’Angelo (officially Santa Maria degli Angeli) features an angel playing trombone (see below image; public domain) (source: wikimedia commons). For additional documentation, see Neilson, Camillo Procaccini: Paintings and Drawings, pl. 77.