This Dewey Decimal Reference Sign
The Dewey Decimal System is a classification system used by libraries to organize and locate books on the shelves. It was first published by Melvil Dewey in 1876 and continues to be used today. Now generally, people walk up to the librarian when they need help finding a book on a specific topic. But there are some topics that people are embarrassed to ask about for whatever reason. So, this library hung up a list of where to find these topics by their respective Dewey Decimal designation.