31.   After anthrax letters addressed to lawmakers were discovered in the Capitol complex last fall, additional masks were ordered for congressmen and senators.

32.   Almost two-thirds said they are at least somewhat worried about the situation of attacks with anthrax letters.

33.   And anybody who would mail anthrax letters, trying to affect the lives of innocent people, is evil.

34.   Are anthrax letters foreign or domestic terrorism?

35.   At home, there are jitters over the warning that more attacks could come and the fatal anthrax letters whose origins remain unknown.

36.   At the same time, the FBI confirmed it is investigating whether other anthrax letters were processed through the Brentwood facility.

37.   Both cases raised the possibility that anthrax letters are contaminating other mail or that the spores are sickening people by means other than the mail.

38.   Chilean anthrax letter not posted in Switzerland, despite stamp,

39.   Chilean suspected anthrax letter not posted in Switzerland,

40.   Former Soviet biological weapons designer Ken Alibek told Congress the anthrax letters could have been generated by a Ph.D. microbiologist.