March 7, 2013 issue of The New York Review of Books magazine had an article
relating to the fifteen volumes on the Robert Lehman Art Collection
("The Robert Lehman Collection in fifteen volumes - An Astonishing Record of a Vast
Collection") by Walter Kaiser.
Keiser writes: 'The greatest painting in the collection is the elegant, classical
portrait of the Princesse de Broglie by Ingres, which Bobbie Lehman described
in a letter to Berenson as "probably the most beautiful picture we have".'
I did not know the painting previously, so I looked it up, and made a quick
sketch based on it:
Jean Auguste Dominique Ingres (1780-1867)
Portrait of Princess Albert de Broglie, 1853
Oil on canvas, 121.3 x 90.8 cm
Metropolitan Museum of Art, Robert Lehman Collection