| CHATHAM 1940's News Archive |
|
| 1947 |
Daily Palo Alto Times |
Synthetic Emeralds Cost Only a Tenth of Real Thing |
View |
| 1947 |
Gemological Institute of America |
Letter |
View |
| 1948 |
The Call Bulletin |
Synthetic Emeralds 'Grown" by Youthful S.F. Scientist |
View |
| 1948 |
Gemological Institute of America |
Letter |
View |
| 1948 |
The San Francisco News |
Makes Emeralds-Radio Crystals Next |
View |
| 1948 |
The American Museum of Natural History |
Letter |
View |
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