Related drawings are in the Uffizi, P.A. Reidl, Disegni dei Barocceschi Senesi, exhib. cat., Uffizi, Florence, 1976, no. 38, fig. 40, and in the National Gallery in Stockholm. The Uffizi drawing, which is slightly smaller than this one, shows Saint Catherine in the foreground, with the Virgin kneeling below the Archangel Gabriel in an architectural setting.