Treaties and other international acts series. * Paper, $10.00 a yr. (approximately 150 issues), $3.50 additional for foreign mailing; single copies vary in price. 3763. Air Force mission to Venezuela, agreement between United States and Venezuela, extending agreement of Jan. 16, 1953, effected by exchange of notes, signed Washington Feb. 11 and 15, 1957 [entered into force Feb. Feb. 15, 1957; operative retroactively Jan. 16, 1957].