Medford, Its about time you go to a show.
Anyways, try a google search. Lets say....Im guessing you live in Oregon. you can google Oregon bodybuilding.. and see what comes up.
If you tell me your state, i can try to find out. California has ton of shows here.
Anyways, Yes, the NPC is the biggest amateur bodybuilding organization. They are a very large organization and pretty much put on the biggest and best shows.