The purpose of National Library Week is to promote the use and support of libraries. It is also a time to celebrate the contributions made by libraries and librarians in the United States. National Library Week is held in April and is generally during the second full week of the month.
National Library Week was first observed by the American Library Association, or ALA, in 1958. It is recognized by all libraries, including public, private, academic, school and special libraries. Each year a specific theme is chosen as a focus of the celebration. For example, the theme of National Library Week was "Unlimited possibilities at your library."