Museum tip: Carolus-Duran constantly invoked the work of Velázquez. For those of you traveling to Spain this winter, a major exhibition at the Prado in Madrid, Velázquez and the Family of Philip IV, runs October 8, 2013–February 9, 2014. For the catalogue of a past show at the Metropolitan Museum of Art that focused on the 19th C French response to Velázquez, click here.