| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2004 | 978-1-930242-27-2 | Office TimeSavers | 2005 Complete US Zip-Area Code Directory: 3-Way Easy Lookup for All US Zip Codes and Area Codes |
| 2005 | 978-1-930242-29-6 | '' | 2006/7 Complete US ZIP-Area Code Directory: 3-Way Easy Lookup for All US ZIP Codes and Area Codes |