Guillaume Picon is a French historian, specializing in the study of institutional archives, an editor, and an exhibition curator. He is the author of Versailles: A Private Invitation (Flammarion, 2019). Bruno Ehrs is an award-winning Swedish photographer; his work has been published in Château de Villette, Villa Balbiano, A Day at Château de Vaux-le-Vicomte, and Chaumet.
