Two Senate sources told CNN the handwriting on the letter also was similar to the block-style writing on the Daschle and Brokaw letters.

CNN: FBI releases photo of Leahy anthrax letter

By using the cursor to select smaller and smaller groups of letters within this block, a patient can eventually indicate which letter he wishes to add to the message he is composing.

ECONOMIST: Neurology

In a bi-partisan display of pork barrel politics, Congressional officials in Northwest salmon country are making it clear that they will pull out all stops to block the FDA from issuing a final approval letter.

FORBES: Connect

Rep. Henry Waxman in a letter yesterday urged Sec. of State Hillary Clinton to block permits for the cross-border pipeline.

FORBES: Total Drops $1 Billion In Oil Sands Grab