Customers of a store that sells “antiquities, notable books and rare maps” have apparently been getting a bit out of line, the Wisconsin State Journal reports. The store’s proprietor, John Taylor, ended up posting a note, Martin Luther style, to his front door: “Handle the books, papers and tools gently. … You’re quite lucky to have this opportunity to experience authenticity. So excuse my admonishment while you break the back of a $5,000 atlas.” I’m actually amazed he lets them handle anything of that value. Via MapHist (thanks Tony).