A collection of typewriters formerly owned by some of the most iconic figures of the 20th century is on display now at Northeastern University’sGallery 360.

The “Celebrity Type” exhibit, which marks the collection’s East Coast debut, features names as famous as Ernest Hemingway and as infamous as Theodore Kaczynski.

Collector Steven Soboroff says he has one guideline for whose typewriter he pursues. ”It’s got to be someone who knocks your socks off,” he told News@Northeastern.

Soboroff’s first typewriter, acquired in 2004, used to belong to Pulitzer Prize-winning sports journalist Jim Murray.

“I love people who are the best at what they do,” Soboroff told the L.A. Times. “The idea that geniuses sat there and accomplished what they accomplished on these typewriters … it gives me chills.”