https://ieee-uffc.org/about-us/history/uffc-s-history/a-history-of-the-quartz-crystal-industry-in-the-usa ENJOY! ED# SMECC -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20200904/8daa7081/attachment.html>