This document discusses strategies for public libraries to serve an aging population. It notes that the "senior tsunami" refers to the large generation of Baby Boomers who will soon enter older adulthood. There are three senior generations with different needs. Libraries should understand the demographics of their community, form senior advisory boards, dedicate staff and budget to senior services, and provide comfortable spaces, relevant collections, and engaging programming for older adults. Technology classes and marketing should appeal to different senior segments. Collaboration with area agencies can strengthen outreach.