World Almanac Books
- The World Almanac for Kids 2011
- The World Almanac and Book of Facts 2005
- The World Almanac and Book of Facts 2006
- The World Almanac for Kids 2008
- The World Almanac and Book of Facts 2008
- The World Almanac and Book of Facts 2010
- The World Almanac and Book of Facts 2011
- The World Almanac and Book of Facts 2012