Louis's books can be found at some of the most important museums in the country

Grover Cleveland Presidential Library & Museum, Caldwell, New Jersey

​

U.S. Grant Cottage National Historic Landmark, Milton, NY

​

Smithsonian National Portrait Gallery, Washington, DC

​

Smithsonian National Museum of American History, Washington, DC

​

Adams National Historical Park, Quincy, Massachusetts

​

John F. Kennedy Presidential Library, Boston, Massachusetts

​

John F. Kennedy National Historic Site (Birthplace), Brookline, Massachusetts

​

Eisenhower Birthplace State Historic Site, Denison, Texas

​

Dey Mansion George Washington's Headquarters, Wayne, New Jersey

​

James A. Garfield National Historic Site, Mentor, Ohio

​

Franklin Pierce Homestead State Historic Site, Hillsboro, New Hampshire