This letter to Isabella Stewart Gardner describes Sargent’s painting of Yoho Falls, in the Canadian Rockies, a work now hanging in the Blue Room of her museum: “I have done a picture of a fantastic waterfall . . . and I am off camping to another place near here where I expect to find other awful sights—whether to your liking or not you shall decide.” Like his friend Henry James, John Singer Sargent renewed his professional energies through travel.