Posted By:
Glen VDon't know what T6 & T7's are either, but they deal with some other sport than baseball.
Here's a list of the T cards:
http://www.oldbaseball.com/refs/tobacco.html
Here's a list of all cards. It should be easy to find the N cards, the E cards will take more work.
http://members.aol.com/METSBWD/chrono.html