The Pioneer Library System (PLS) is a public library system that serves residents in the central Oklahoma counties of Cleveland, Pottawatomie and McClain with administrative offices in Norman. Additionally, the system also allows those served by the Metropolitan Library System to check out materials via a reciprocal borrowing agreement, and also allows non-residents to borrow materials if they pay an annual fee. The twelve-branch system is governed by a board of trustees. Lisa Wells currently serves as executive director.