The essentially surface nature of Eastern Woodlands sites has invited the accumulation of private collections. Likewise, in densely populated areas such as New Jersey and adjacent states, many sites have either been destroyed by building operations or have been subjected to repeated cultivation. As a result, an enormous quantity of archaeological material has been lost to scientific excavation. While archaeologists have realized that intensive collecting by private individuals has always followed the plow, little has been done but deplore and ignore this activity. In consequence of this attitude, there is a tendency to assume that the contents of excavated sites represent the range of aboriginal culture, especially when cultivation has not been practiced for several decades. Furthermore, the enormous quantity of material in collections has not been utilized to supplement the archaeological data obtained from excavations.