Change doesn't come from Washington. Change comes to Washington, Union, Grenadines of St. Vincent, Sheet of 6 stamps. The President Obama International Stamp Collection. No date given.
Barack Obama, 44th President of the United States. No date. Rodney Lawrence Hurst, Sr. Papers. University of North Florida. Thomas G. Carpenter Library. Special Collections and Archives. UNF Digital Commons. https://digitalcommons.unf.edu/hurst_stamps/175/
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