The 2015 United States Mint Proof Set includes five quarters that honor the following states: Homestead National Monument of America in Nebraska Kisatchie National Forest in Louisiana Blue Ridge Parkway in North Carolina Bombay Hook National Wildlife Refuge in Delaware Saratoga National Historical Park in New York These quarters are part of the America the Beautiful Quarters Program, which began in 2010 and features designs that showcase national parks and other historic sites throughout the United States and its territories. The 2015 proof set also includes proof versions of the Lincoln cent, Jefferson nickel, Roosevelt dime, Kennedy half-dollar, and Native American $1 coin.