People have no excuse to write using incorrect grammar-especially if their writing will be seen by the public. A little proofreading goes a long way. For Carolyn Stevenson Silicato, a retired elementary school teacher, this carelessness has always been a pet peeve. In fact, it became part of a tradition in the district where she taught: anyone spotting a misspelling in a public place would be sure to tell her about it. Those collected missteps form the genesis for More than 100 Signs That Prove Nobody's Purrfect . She began taking pictures of misspellings that she saw along the...