PHOTO CREDITS
Frontispiece courtesy Anthropology Department, Southern Methodist University (SMU)
Cover photo courtesy U. S. Geological Survey (USGS)
| Page | |
|---|---|
| [11] | USGS |
| [12] | USGS |
| [14], [16], [17] | Willard F. Libby |
| [18] | University of Arizona |
| [21] | Massachusetts Institute of Technology |
| [22] | Graduate Research Center of the Southwest |
| [23] | Graduate Research Center of the Southwest |
| [25] | Robert L. Fleischer |
| [26] | Perkin-Elmer Corporation |
| [30] | University of Texas |
| [32] | Graduate Research Center of the Southwest |
| [36] | Massachusetts Institute of Technology |
| [40] | Des Bartlett, Armand Denis Productions |
| [43] | Anthropology Department, SMU |
| [44] | USGS |
| [47] | USGS |
| [59] | Author’s photo courtesy Graduate Research Center of the Southwest |