First Canal Zone Stamps Issued
On June 24, 1904, the U.S. issued its first stamps for use in the Canal Zone.
With military assistance from the United States, Panama declared its independence from Columbia on November 3, 1903. The Hay-Bunau-Varilla Treaty was negotiated, then ratified in Panama on December 2, 1903. The United States followed suit on February 23, 1904, clearing the way for a long-anticipated canal project across the Panama isthmus.