21.   Still, some law enforcement officials have expressed doubts that the record existed.

22.   That means, whether in a bookstore, library or video store, that computerized records exist of which ideas a person has chosen to spend time with.

23.   The government has maintained that such records do not exist.

24.   The records exist only on paper now, prompting the advocacy groups to accuse legislators of trying to conceal campaign finance information.

25.   There is the possibility, of course, that these records never did exist, or that if they did, they might now be lost forever.

26.   Today, the pieces are rare, and few records exist of what was made.

27.   Told by Ehrlichman that no record existed of such a tap, Nixon was not convinced.

28.   To his surprise, many more records exist than he ever imagined.

29.   When the Chicago Tribune recently requested a copy it learned that the record no longer existed.

30.   But Japan has declined to detail the extent of these activities, in many cases saying records no longer exist.