Geoffrey M. Horn
Contributing Editor 4
| Title | Format | |
|---|---|---|
 | The World Almanac and Book of Facts 2003 | Paperback |
 | The World Almanac and Book of Facts 2004 | Paperback |
 | The World Almanac and Book of Facts 2005 | Paperback |
 | The World Almanac and Book of Facts 2009 | Paperback |