Libraries and museums have been established for other presidents, but they are not part of the NARA presidential library system, and are operated by private foundations, historical societies, or <answer>state</answer> governments, including the Abraham Lincoln, Rutherford B. Hayes, William McKinley, Woodrow Wilson and Calvin Coolidge libraries. For example, the Abraham Lincoln Presidential Library and Museum is owned and operated by the <answer>state</answer> of Illinois.
Abraham Lincoln's Presidential Library and Museum is operated by what type of entity?
state