From Colonial Williamsburg: Past and Present Podcasts—
"George Washington's retirement venture had a high alcohol content. Mount Vernon's Director of Preservation, Dennis Pogue, leads us on a tour through Washington's whiskey distillery."
The Colonial Williamsburg site also has an informative essay that offers interested readers more information on the history of whiskey in Colonial America.
To learn more about Mount Vernon—whiskey excluded—check out the official Mount Vernon Website.