"F. Roybet. (Fr.) Paris. Medal, Paris Salon, 1866. Velasquez painting the Infanta. 15 x 24. In the superb work roybet represents the great Spanish artist painting Margaret, one of the royal princesses of the house of Spain. The portrait of the child is already 'roughed in,' and the painter is studying his subject for the traits and expression which he will presently transfer to the canvas. The richness of the effects produced in this picture by the judicious contrast of low tones of color is surprising."
A Catalogue of Paintings in the Gallery of D.W. Powers, Rochester, N.Y. with Explanations and Sketches of Painters by C.C. Merriman. Rochester, N.Y.: E.R. Andrews, Book and Job Printer, Aqueduct Street, 1877.