Corporate libraries of the kind we would recognize today began to appear around the turn of the twentieth century. They were a response to a rapidly changing corporate and commercial environment, acting as adjuncts to both the rise of systematic industrial research and the office management revolution that accompanied the implementation of scientific management. A survey of American corporate libraries in 1916 by the British manufacturer Rowntree and Company provides a snapshot of their operations and perceived value. The survey was repeated with a selection of today's corporate librarians. Their responses are strikingly similar to those of their early twentieth-century counterparts, despite intervening technological change. As it was a century ago, the value of the corporate library, even if it cannot be quantified, is accepted.