SPRINGFIELD, Ill. (AP) — The foundation that supports the Abraham Lincoln Presidential Library and Museum in Springfield, Illinois, is selling a black dress once owned by movie star Marilyn Monroe to raise funds to repay a loan used to buy artifacts relating to the 16th president and keep the presidential relics available for public viewing.

The Abraham Lincoln Presidential Library Foundation is putting nine items up for auction in Las Vegas June 23, including photos of the 1950s movie icon by photographer Arnold Newman, The Chicago Tribune reported . The wool dress could sell for more than $60,000, according to Julien’s Auctions.

“Getting (Monroe) items is becoming more and more difficult,” said Darren Julien, president and CEO of the auction house. “The supply’s less and less, but demand’s more and more because you have people in Asia and Russia and all over the world that are collecting pop culture — especially Marilyn Monroe.”

Foundation officials hope proceeds from the auction will allow the foundation to avoid selling presidential memorabilia.

The foundation owes about $10 million on a 2007 loan it used to buy items purportedly belonging to Lincoln, including a stovepipe hat, bloodstained gloves he wore the night he was assassinated and an 1824 book with his handwriting.