Image: Panama Canal 25th 1939 U.S. stamp.1

Description: The Panama Canal opening was commemorated on its 25th anniversary with a 3-cent stamp issued on August 15, 1939. The stamp shows a steamship passing through the Gaillard Cut, President Theodore Roosevelt on the left promoted the canal and General George W. Goethals on the right was chief engineer.
Title: Panama Canal 25th 1939 U.S. stamp.1
Credit: Arago: people, postage & the post, National Postal Museum online.
Author: Bureau of Printing and Engraving
Permission: This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No