“If you’re walking down the right path and you’re willing to keep walking, eventually you’ll make progress’", Guyana, sheet of 4 stamps. The President Obama International Stamp Collection. No date given.
Barack Obama, 44th President of the United States of America. 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/145/
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