Known as the 'Unabomber,' Ted Kaczynski was convicted in 1997 of sending out sixteen package bombs which killed three people and injured twenty-nine others in a seventeen-year bombing campaign that lasted from 1978 to 1995. Kaczynski was finally arrested in April 1996, after being turned in by his brother, David Kaczynski. Mailing envelope, 9.5 x 4, addressed in Kaczynski's hand and signed in the return address area 'Theodore John Kaczynski,' adding his prison number. In fine condition. RRAuction COA.