Presidential Libraries belong to the American People–You and me
Where are the Presidential Libraries? Check out this map:
When a president leaves office, the National Archives and Records Administration (NARA) establishes a presidential materials project to house and index the documents until a new presidential library is built and transferred to the federal government. These are repositories for preserving and making available the papers, records, collections and other historical materials of every President of the United States since Herbert Hoover (31st President, 1929-1933). In addition to the library services, museum exhibitions concerning the presidency are displayed.
See them all at https://www.archivesfoundation.org/visit/presidential-libraries