Morgan Library & Museum, 1938.

Built expressly to house the famous J. Pierpont Morgan Collection of books and manuscripts, the Morgan Library was designed by McKim, Mead & White to provide a beautiful setting for the treasures within. As in the construction of Greek temples, the stones were perfectly fitted, obviating the use of a full bed of mortar- an expensive but enduring method of constructing masonry walls and today practically a lost art.