Copy of a watercolour, "Portrait of the Infanta Margarita Maria", by J. R. Swinton after Martinez del Mazo
Attributed to: Nicolaas Henneman
"The Annals of the Artists of Spain", plate 32
At the time this photograph was published in "The Annals of the Artists of Spain" the original oil painting was thought to be by Velasquez. It has since been reattributed and is now thought to be by Martinez del Mazo.