Welcome to Time Machines, where we offer up a selection of mechanical oddities, milestone gadgets and unique inventions to test out your tech-history skills.
This invention brought streaming music to New York City's early adopters around the turn of the 20th century. Mark Twain, who was among the first to have a personal telephone line installed, was an avid supporter of the service, which provided the crystalline clarity of electrically generated music delivered into his own home
