Grenada, sheet of 4 stamps. The President Obama International Stamp Collection.
U.S. President Barack Obama invites Mexican President Felipe Calderon to the White House. 2010. 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/194/
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