Now in its 100th year, PNLA is one of the oldest regional library associations in North America and the only one that spans international borders.  The history of PNLA is a pioneering story.  Started because national conferences were too large and too distance and state associations, at the time, too small or non-existent, PNLA broke up isolation and played a strong and influential role in the development of libraries and library resources in the region.