My thanks to David Hogge, Head of Archives, Freer Gallery of Art and Arthur M. Sackler Gallery at the Smithsonian Institution in Washington, D.C., for seeking out and scanning material relevant to Oppenheim in the Myron Bement Smith and Ernst Herzfeld papers. Thanks also to the staff of the Walters Art Museum in Baltimore and the Metropolitan Museum in New York for their assistance in unravelling the fate of the orthostats Oppenheim brought to New York in the 1930s. To my friends and colleagues in Princeton—Walter Hinderer, Christoph and Flora Kimmich, and Peter Paret—and to Professor Susannah Heschel of Dartmouth College, one of the referees of the manuscript, I am indebted for their interest in the project as well as for practical suggestions and advice. As on previous occasions, I have benefited greatly from the sagacity and good counsel of Alessandra Tosi and Corin Throsby at Open Book Publishers.