Thursday, August 11th 2011, 4:10 pm
NewsOn6.com
UNDATED -- Oklahoma is featured on a new stamp that just became available Thursday. It's part of the "Flags of our Nation" series and showcases the Oklahoma state flag along with an oil derrick.
This is the fifth of six sets, and it also includes stamps for seven other states and two commonwealths.
The final set in the series comes out next year.
August 11th, 2011
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