A team that includes the CIA is expected at the University of Washington tomorrow to make certain any national-security information has been removed from the papers of the late Sen. Henry M. Jackson.

The search comes 20 years after the senator's family donated his papers to the UW. The collection ranges from reports to correspondence and is housed in hundreds of boxes at the Allen Library.

Jackson served in the U.S. Congress almost 43 years. He died at age 71 in 1983.

At the time of the donation, University staff members searched the collection for items marked with "national security designators" and sent them to federal agencies for review, said Kelley Knickerbocker, UW facilities security officer.

The UW also requested declassification so the collection could be open to researchers. Over the years, some of the items sent out for review have been declassified.

The last papers were submitted for review about a decade ago. In mid-2004, the UW heard back on a final item, which had been declassified by the CIA.

But that item also piqued interest and an official review was ordered, Knickerbocker said.

The review will be conducted likely over a few days of only parts of the collection by a team of about five people from the CIA, Department of Energy, National Archives & Records Administration and the Air Force.

Jackson was an expert on national security, energy and environmental concerns.

Marsha King: 206-464-2232 or mking@seattletimes.com