Primary sources
| Historic Documents Online Edition July 2009 Request Price | |
| Historic Documents Cumulative Index: 1972-2005 July 2006 Buy Now | |
| CQ Researcher Media Bias v.14-36 October 2004, Greenblatt Buy Now Buy Now | |
| Homeland Security: A Documentary History October 2004, Maxwell Buy Now | |
| CQ Researcher Media Ownership v.13-35 October 2003, Hatch Buy Now Buy Now | |


