Office TimeSavers

year of pub­li­ca­ti­onISBNauthor(s)title
1999978-1-930242-00-5Office TimeSavers · Thomas Master2000 CodeTracker Area Code Map: area codes of US, Canada and parts of the Caribbean
2004978-1-930242-27-2Office TimeSavers2005 Complete US Zip-Area Code Directory: 3-Way Easy Lookup for All US Zip Codes and Area Codes
2005978-1-930242-29-6   ''2006/7 Complete US ZIP-Area Code Directory: 3-Way Easy Lookup for All US ZIP Codes and Area Codes