[Elecraft] OT: large scale production of quartz crystals during WWII

[Jack Smith]

For more reading, the IEEE Ultrasonics, Ferroelectrics, and Frequency 
Control Society has a collection of crystal tutorial papers at 
http://www.ieee-uffc.org/fcmain.asp?view=review#tutor

International Crystal has also collected many historical papers on 
crystal control, accessible via http://www.icmfg.com/frequencycontrol.html.


Jack K8ZOA
www.cliftonlaboratories.com
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