The Virgin of the Immaculate Conception. Dated: 1768/1778. Dimensions: sheet: 29.8 x 21.1 cm (11 3/4 x 8 5/16 in.) image: 27.2 x 18.9 cm (10 11/16 x 7 7/16 in.). Medium: pen and brown ink with brown wash over red chalk and graphite on cream laid pape