from a local estate is a Vintage Nicholson File Co Booklet called File Filosophy . The copyright date is 1943. this is a 48 page booklet full of information to choose the right file, and how to get the most out of files. This is in good used shape the cover shows minor wear and small crease marks in the corner. the pages look to be in good shape i even have the envelope it was mailed in with the Nicholson File CO logo on the envelope. the envelope does show wear