Local history fans, there’s a new book out there you’ll want to add to your library: Oldest Los Angeles by travel writer and LA native Mimi Slawoff.  Slawoff will be at Chevalier’s Books tomorrow evening talking about the latest book to celebrate our city’s heritage. The book features 84 easy-to-read vignettes on local landmarks, some that are very well known and others that finally get their moment in the limelight, telling the stories of people as well buildings.