They use to publish them monthly, they'd show all the crazy ways they caught people smuggling drugs (i.e dissolved in rum, different parts of cars, or double walled barrels etc.) and detailed accurate lab analysis of newer/unusul drugs/presses. Then they stopped publicly issuing them because they found out drug smugglers were studying them. From what I understand you can still get access to them if you are a lab or LE affiliated since there purpose was to help notify other LE of new substance/trends. Would be sweet to see the current ones..
I might be able to get them on a regular basis assuming what you've posted is correct. Will reach out to some folks and see if it's possible