Arbitration treaty between the United States and Portugal, signed March 1, 1929 1
1. A draft of this treaty was submitted to the Portuguese Legation March 21, 1928, and was accepted without change.
 Arbitration Treaty Between the United States of America and Portugal, Signed at Washington, March 1, 1929
Done at Washington the first day of March in the year one thousand nine hundred and twenty-nine.
Treaty Series No. 803