Pueblo pottery and Pueblo potters have long been of interest to anthropologists, artists, and other scholars. Pueblo pottery has been a focal point of government, museum, and individual collecting activities for well over a century, beginning with the work of Major John Wesley Powell and later Colonel James Stevenson on behalf of the V.S. Geological Survey and the Bureau of (American) Ethnology. Anna O. Shepard pioneered technical studies of archaeological ceramics based on the pottery of Pecos Pueblo and on sites on the Pajarito Plateau of New Mexico; and Ruth Bunzel's The Pueeblo Potter (1929) is an early classic in the field of anthropological studies of ceramics. Alice Marriott's biography, Moria: The Potter of San Ildefonso (1948) is an early study of a particular Pueblo Potter.