Amendment to the Parcel Post Agreement between the Republic of the Philippines and New Zealand. Signed at Wellington, August 2, 1973; at Manila, August 29, 1973.

Asian Oceanic Postal Convention. Signed at Manila, January 23, 1961.

Constitutional and general provisions of the Universal Postal Union. Signed at Brussels, July 11, 1952.

Postal Convention between the Republic of the Philippines and the Spanish state. Signed at Madrid, October 6, 1951.

Postal Agreement between the Bureau of Posts of the Republic of the Philippines and the Directorate General of Posts of the Ministry of Posts and Telecommunications of the People's Republic of China. Signed in Peking, November 18, 1978.