vi SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 146 
many gaps in our knowledge, the filling of which may change some of 
the ideas we now have. Should this volume fall into the hands of an 
interested layman, we hope he may derive from it a better under- 
standing of what archeologists are striving for when they dig into the 
earth. 
The papers are revisions of those delivered on August 22, 1962, 
at the 35th International Congress of Americanists in Mexico City. 
We wish to express the gratitude of all the participants to Dr. Ignacio 
Bernal, President of the Congress, for his interest and support, and 
for serving as chairman of the session. Thanks are due the Wenner- 
Gren Foundation for Anthropological Research of New York City 
for making possible the attendance of four of the South American 
participants at the Mexico City meeting, the fellowship section of the 
Pan American Union of Washington, D.C., for generously allowing 
one participant to accept his foreign study in the United States via 
the Congress, and the Institute of Andean Research, Inc., of New York 
for subsidizing the purchase of extra volumes for distribution to Latin 
American institutions and scholars. For the numerous typings of vari- 
ous versions of the manuscripts always with pressing deadlines, we 
wish to express our appreciation for their cooperation and efforts to 
Miss Judith Hill and Mrs. Jeraldine Whitmore. Thanks are also due 
George Robert Lewis for drafting most of the charts and maps. 
As the organizers of the symposium and editors of the present 
volume, we wish to record the pleasure that it has been to work with 
our colleagues over the past two years. Their cooperation in follow- 
ing instructions and meeting deadlines has achieved a result that no 
single archeologist could have produced. Whether the interpretations 
survive the test of time is less important than the fact that archeol- 
ogists from nine countries have been able to collaborate in the solu- 
tion of the problem that is our common goal — the reconstruction of 
cultural development in the New World. 
B. J. M. 
C. E. 
November 1, 1962 
