Study of a Figure in a Niche (Saint Ambrose; recto); Architectural Studies: Four Alternative Designs for Fictive Niches and… https://www.rawpixel.com/image/9184740/image-arcimboldo-chosen-angel-drawing-figure-studyFree Image from public domain licenseDesign for a Crucifix with the Virgin Mary, Saint Mary Magdalen, and Saint John by Polidoro da Caravaggio https://www.rawpixel.com/image/9328404/image-art-space-vintageFree Image from public domain license