31.   While he was teaching, writing and researching military history, I was leading a platoon in Vietnam.

32.   With countless tools available on the Internet, families are researching their histories.

33.   After his retirement, he spent much of his time researching the history of the Chicago suburb of Forest Park.

34.   For his third novel, he has started researching the history of fundamentalists who want to destroy America.

35.   He has written various books and researched the history of the Jews and their thinking, according to his official biography.

36.   Tanner researched Indian history for a year before launching Native Tours, spending time at state historical societies and visiting tribes to speak with elders.