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Just read this at the beginning of the 1/03 edition...
"Welcome to Microgram Bulletin
This is the first unclassified issue of Microgram Bulletin. Some background for our new subscribers: Microgram was started as a law enforcement restricted forensic chemistry newsletter in November 1967 by the Bureau of Drug Abuse Control (BDAC) and Bureau of Narcotics and Dangerous Drugs (BNDD).