Commentary of the British Museum: "Vignette showing a scholar standing behind a table, while looking at two light projections on a screen, a candle with one flame on the table while a putto holds a candle with two flames at right; after Peter Paul Rubens; illustration to the fifth book of Franciscus Aguilon's "Opticorum" (Antwerp: 1613). c.1613.Engraving"; Not mentionned in the bibliography