CHICAGO (AP) — Chicago's Museum of Science and Industry is celebrating its 80th year with an exhibit featuring artifacts representing "the museum's DNA."

Museum officials say 80 artifacts on display range from early inventions to modern advancements. They include the 1909 Jones Live Map Meter, an early version of GPS, and a 1948 thin piece of steel that recorded and erased sound.

Head curator Kathleen McCarthy says she chose the items on display to "spark the thought process."

Peter Ascoli, grandson of museum founder Julius Rosenwald, was on hand Wednesday to open the exhibit. He told stories of the man who advocated for the creation of the museum, located at the site of the 1893 World's Columbian Exposition.

Ascoli said Rosenwald wanted a place for kids to "learn and enjoy and be inspired."