1.   Military historians may never know what brought down the jet.

2.   And local historians know of no significant hijacking attempt out of Phoenix.

3.   Documentary filmmakers may be discovering what historians have known for a long time.

4.   Even so, Rampton said that Irving has persisted in basing his assertions on the Leuchter report, even though the historian knows it is faulty.

5.   Every half-price historian knows about Brown vs. Board of Education, the ruling that launched school desegregation.

6.   For its World War II period, France has embraced a legend of unity that Charles de Gaulle invented, even though historians know better.

7.   Historians know better.

8.   Historians know the cycle.

9.   Historians have long known about the pique provoked in Roosevelt and Churchill by General Charles de Gaulle.

10.   Historians have long known that Klaus Fuchs, a top physicist, betrayed the effort, as did David Greenglass, a machinist.