GRAND RAPIDS, Minn. (AP) - An anonymous donor has offered a $1 million reward for credible information leading to the pair of actress Judy Garland's ruby red slippers stolen from a museum in her Minnesota hometown.

Garland wore the sequined red slippers in the 1939 movie "The Wizard of Oz." Three other pairs still exist, including one pair on display at the Smithsonian Institution in Washington.

John Kelsch, executive director of the Judy Garland Museum in Grand Rapids, says the anonymous donor is from Arizona and is a huge Garland and "Wizard of Oz" fan.

The reward offer requires the exact location of the slippers and name of the perpetrator.

The 10-year anniversary of the theft is coming in August. The slippers were insured for $1 million. Kelsch says they could be worth $2-3 million now.