- Our Mission - Preserving our history, Connecting our community, and Enriching the life of the mind. The Lewiston Public Library is an invaluable community asset. This important public repository of knowledge and culture serves as a focal point for education and information in Lewiston. It provides a wide range of needed information services to users of all ages, abilities, and backgrounds and, in so doing, it remains both a significant institutional symbol and a core working component of our democratic society.