In the late 40's, he taught history at Harvard and was a senior historian at the Johns Hopkins University.

At 34, his publication list outstrips those of many senior historians, and includes several books on Congressional dissenters and American foreign policy.

But he does have defenders, including some very senior and respected historians.

Finally, in an effort to understand humans, the senior historian had agreed-provided they could find a large enough group of Ildirans to accompany them.

Mr. Jackson is to become the society's senior historian.

The senior historian is Will Erwin and the head of the research department is Jason Walker.

He said Oxford had lost six senior historians in the last five years, perhaps 15 percent of the department.

Mr. Jackson said he was trying to stay out of the new management's decisions, though he remains the society's senior historian and a member of the board.

He had married the senior historian of Newnham.

Promoted to commander in 1970, he became senior historian in the Directorate.