31.   As historians of technology are fond of noting, Beta was widely perceived as the best format.

32.   At least, that is what Ms. le Bourhis, a fashion historian who works for the Christian Dior company, was in New York to do.

33.   At the center of this labyrinthine Gothic mystery is a historian who turns detective while visiting a cathedral library in Victorian England.

34.   At first it seemed like the kind of mistake that aging memories are prone to and the reason that many historians are wary of oral history.

35.   Baseball historians are puzzled as to why.

36.   A historian will be the guide, and there will be special guests as well as a tour director.

37.   But corporate histories also raise questions about whether historians for hire are less critical than writers working without fees from their subjects.

38.   But only now are historians unearthing evidence of the grief and of the defeatism that lurked beneath the rubble during the relentless bombing.

39.   But the historians are not off the hook, either.

40.   But some historians have not been so generous, pointing out several errors and misconceptions.