This is a diligently researched book in which every essay has its own clear map.

For some, coming to the Barrett-Jackson event is like a trip to a collector-car shopping mall - one where the cars' histories have been diligently researched.

He delivers a diligently researched, respectful and dull account of the man, an annotated catalog of roles and productions rather than a fully realized portrait.

I have diligently researched the theory of hussade; I know Kalenshenko word for word.

The volume was praised by the social historian Cleveland Amory as "candid, graceful, diligently researched."

McCann has also diligently researched 17th-century British history in order to write it.

What he delivers in "American Plastic: A Cultural History" is a diligently researched but uninspired industrial history.

"Uneven Lies," a diligently researched book, celebrates scores of blacks who have played prominent roles in golf's history since the 1800's.

Joe Joseph writing in The Times recommends the diligently researched series.

(Our editors have diligently researched this fact.)