COLUMBUS, Ohio (AP) — When the young John Glenn nestled in his bed, it may not have been sugar plums that danced in his head, but celestial bodies.

A recently discovered child's pillowcase that belonged to the late U.S. senator and space hero depicts revolving planets, stars and a view to outer space. At the center, a koala bear clings to some sort of spacecraft, labeled "John" in blue embroidery.

Glenn was the first American to orbit Earth.

New York-area graduate student Adam Sackowitz purchased the pillowcase at a March 8 estate sale for $2,500. An authentication certificate says it belonged to Glenn during childhood.

Sackowitz hopes to donate the item either to Glenn's birthplace of Cambridge, Ohio, or to the John & Annie Glenn Museum in New Concord, Ohio.