There are a number of entries pertaining to kidnapping in the Iraq War Logs recently released by WikiLeaks on October 22, 2010.
It's slow going but I am making my way through the logs in chronological order. Here are some of the incident reports that I've found so far that also match reported dates of the kidnappings of Americans in Iraq.
Dean Sadek abducted and missing since November 2, 2004As more incident reports are discovered, I will post the links in the table list of Americans Missing in Iraq.
Jeffrey Ake abducted and missing since April 11, 2005
Jill Carroll abducted January 7, 2006, later released
Ronald J. Withrow abducted January 5, 2007, deceased, remains later identified.
Unknown Iraqi-American citizen abducted and missing since February 1, 2007
Unknown dual American-Iraqi citizen abducted and missing since March 3, 2007