Senate executive documents, 86th Congress, 1st session. C. Protocol of amendment to convention on Inter-American Institute of Agricultural Sciences, message from President of United States transmitting protocol of amendment to convention on Inter-American Institute of Agricultural Sciences, which protocol opened for signature in Spanish, English, Portuguese, and French languages at Pan American Union in Washington, Dec. 1, 1958, protocol signed in behalf of United States, Jan. 7, 1959.