The experience of the Newberry Library in handling a mass of business records may be of value to other libraries, as well as to scholars, in an important field which, notwithstanding a number of recent excellent books, is still one of the least worked in American history. The primary question which disturbs librarians is, of course, whether the provision of shelf space and the cost of cataloguing, or otherwise arranging for scholarly use, are justifiable for records as voluminous as these.