Treaties and other international acts series. 6129. Importation of educational, scientific, and cultural materials (Florence agreement), agreement and protocol between United States and other Governments, opened for signature at Lake Success, Nov. 2, 1950 [signed on behalf of United States June 24, 1959, proclaimed by President of United States Nov. 3, 1966; entered into force with respect to United States Nov. 2, 1966].