Posted By: 
Pennsylvania  TedIt took me 10 months to accumulate 518 cards for an all-PIEDMONT "set".
It has taken me almost a year to acquire 366 cards of an all-SOVEREIGN set of 404 cards.
I am tempted to go after an EPDG set next (or perhaps a POLAR BEAR set). These sets are complete
 with only 300+ cards.
  
If one really concentrates his time and effort putting these subsequent sets together, it will take an
 average of a year for each set. So, for an old-timer like me, the trick is to play this game in parallel.
 Even then, it's a daunting task any way you approach it.
But, I'm too old to to do all 15 basic T-brands....however, if I can convince my oldest Grandson to
 continue this challenge when he gets his EE degree from the U of Maine in a couple of years....then 
the challenge will stay in the family. He is an avid BB fan and appreciates the history of the game;
 and furthermore, he can bring youthful energy and "new money" into acquiring a "super-set".
But Jim....you were just humoring me....weren't you ?