They issued the state quarters fron 1999 thru 2008. The 50 State Quarters were released by the United States Mint every ten weeks, or five each year. They were released in the same order that the states ratified the Constitution. Each quarter's reverse commemorated one of the 50 states with a design emblematic of its unique history, traditions and symbols. Certain design elements, such as state flags, images of living persons, and head-and-shoulder images of deceased persons were prohibited
I copied and pasted above to tell you what the program was. But they are in circulation and completly spendable, just as the presidential dollars are. The Tennesse one you like is for their music, mostly of course, Elvis!