Blair's '06 "Trilogy" coded message ...?

1st....Hi all! Happy Holidays!

I have a question & I'm hoping that someone here can enlighten me.  Concerning the 2006 releases of Blair's reserves, I've read before (Blair's words regarding the T99), "...each label has Two coded messages that can only be complete with the TrilogySet. -Texas-halloween-Holiday."  

Is anyone familiar with these "coded messages" to which he's referring?  ...Or/and how to read them?  The '06 "Trilogy" set is part of my collection & I am ...VERY curious as to how to decipher them.

Any assistance will be greatly appreciated!....

Thanks for reading,

~Z~