In the age of smartphones, social media and cyber hacking fears, vintage typewriters that once gathered dust in attics and basements are attracting a new generation of fans across the U.S.

From public “type-ins” at bars to street poets selling personalized, typewritten poems on the spot, typewriters have emerged as popular items with aficionados hunting for them in thrift stores, online auction sites and antique shops. Some buy antique Underwoods to add to a growing collection. Others search for a midcentury Royal Quiet De Luxe — like a model author Ernest Hemingway used — to work ...