From webpage: "The Thomas Jefferson Foundation was incorporated in 1923 to preserve and operate Monticello, the plantation home and architectural masterpiece of Thomas Jefferson. Since its founding, the Foundation has dedicated itself to a two-fold mission of preservation and education. The Thomas Jefferson Foundation receives no government funding for general operations. As a private, nonprofit organization, we rely on the generosity of donors like you to accomplish our dual mission of preservation and education." Tax Identification Number (EIN): 54-0505959.