The Library Grants Blog is a helpful site to stay up-to-date on the latest funding opportunities for libraries. Stephanie Gerding and Pam MacKellar, authors of the book Winning Grants: A How-to-Do-It Manual for Librarians, publish this blog.
Remember to look for funding opportunities from local organizations including your town or city's education and cultural foundations and clubs (Kiwanis, Rotary, Junior League).
Among these grants are funding for public programming, preservation, school, services to children, and local history projects. Be aware of deadlines and geographic restrictions.