Postal Service Previews 5th of 16 Stamps Celebrating National Park Service's Centennial
April 08, 2016 11:25 ET
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United States Postal Service
WASHINGTON, April 8, 2016 (GLOBE NEWSWIRE) -- A dramatic photograph of the interior of Carlsbad Caverns was previewed today as the fifth of 16 Forever Stamp images to be revealed over a three-week...