In all, more than than 200 companies have official licensing agreements with Elvis Presley Enterprises, including greeting card maker American Greetings and candy giant Hershey.

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Elvis Presley Enterprises, which runs Elvis's mansion, Graceland, has been asked if it wants to buy Elvis's old home and make it into a museum.

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Additionally, CKX holds 85% ownership in Elvis Presley Enterprises and an 80% ownership of Muhammad Ali Enterprises, both of which control nearly every business aspect of these two idolized Americans.

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Todd Morgan, a spokesman for Elvis Presley Enterprises which manages Presley's estate, said the tooth and hair could be genuine but added that the company does not certify purported Elvis memorabilia as genuine.

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CKX, the New York-based entertainment company, which two years ago bought a controlling stake in Elvis Presley Enterprises (EPE) from the late entertainer's daughter Lisa Marie, is taking to hotels and casinos to jump-start the estate's annual revenues.

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In all, more than than 200 companies have official licensing agreements with Elvis Presley Enterprises, including greeting card maker American Greetings (nyse: AM - news - people ) and candy giant Hershey (nyse: HSY - news - people ).

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