I’ve got a deal for you, if you’ll just step into my office.  (Larry Elmore box art for FR8: Cities of Mystery, TSR, 1989.)  The 64 page book has step by step advice on locating towns and cities, determining their size, type of ruler, laws and taxes, culture, and adventure hooks, though there’s little or no guidance about planning the overall city layout.  The box set also includes 33 cardstock buildings and 2 large sheets of street plans with a 1″ square grid.