References:
- https://www.britannica.com/topic/White-House-Washington-DC/The-White-House-since-1900
- https://www.whitehouse.gov/about-the-white-house/the-grounds/the-white-house/
- https://en.wikipedia.org/wiki/White_House
- https://www.history.com/topics/landmarks/white-house
- https://www.trolleytours.com/washington-dc/white-house