Parcel Post Agreement between the Republic of the Philippines and the Commonwealth of Australia. Signed at Melbourne, July 15, 1949. Signed at Manila, September 1, 1949.

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

Detailed regulations for the execution of the Parcel Post Agreement between the Republic of the Philippines and the Republic of China. Signed at Manila, July 5, 1957. Signed at Taipeh, August 5, 1958.

Parcel Post Agreement between the Republic of the Philippines and the United States of America. Signed at Manila, September 21, 1964. Signed at Washington, November 12, 1964.