A special type of celebrity collection

Iconic type­writers once owned by John Lennon, Ernest Hem­ingway, Theodore Kaczynski, and other notable 20th-​​century fig­ures are now on dis­play at Northeastern’s Gallery 360 in a first-​​of-​​its-​​kind exhibit from col­lector and L.A. busi­ness leader Steven Soboroff.