The Riverside poem IMO likely written by Zodiac IMO and signed "RH". And it happens to match a known Kaczynski method, leaving false clues, like he did with the "RV" fragment he put into a bomb to steer police off track.

The wood desktop poem in Riverside signed RH was an example (IMO) of the Zodiac giving a false clue that the killer of Bates was a local student. It seems the killer of Aardsma probably left a morbid message on the wood arm of a chair signed RSK.
RV, RH, RSK. Hmm.
The weird "S" on the Riverside poem, looks like an upside down "5", also something Ted K does sometimes. Lots of other handwriting matches.


Compare them better here in blow- ups:


Top is Kaczynski bottom is Zodiac. Put together by Doug Oswell.
Notice the "Th" linkage, lower case "r", capital "I", rare three stroke "k" and many other matches. Also notice similar spacing and feel.



Thanks to AweShucks for the excellent research and graphics work on the handwriting comps.
RAND: Something I wanted to ask about TK. Z had a sense of humor. He was whimsical and strikes me as a bit of a prankster. This doesn't square with TK. He doesn't seem to have any sense of humor whatsoever. What say you that think TK was Z?
AK WILKS: Good question. As the "Freedom Club", aka "FC", aka the Unabomber, he was posing as a terrorist group, which are not exactly known for their side splitting laughs and good humor. Most of the Unabomber communications are fairly dry and academic in tone. He was trying to get across what he felt were serious points about society and technology.
There are a few exceptions - the Unabomber admitted that a July 4th threat to blow up a plane was a "prank" and said "we haven't tried to blow up an airliner (lately)." A rather sly sense of humor - and it matches what Zodiac said when he revealed a threat to mass transit (school bus) was a prank - "if you think I am going to take out a bus the way I said I was you cops deserve to have holes in your head." {Quote from memory}.
Zodiac said "2 cops pulled a goof"; Ted said "The FBI is a joke".
As a kid he hung a dead cat in the locker of a girl he liked. He also wrote a funny article that appeared in either Harpers or Atlantic magazine.
TK wrote dirty limericks and obscene poems against a woman who turned him down for a date.
TK also was a master at adopting different tones in different letters.
As the Unabomber he could be academic and pedantic.
But he also wrote a letter posing as a Utah resident pissed off at local lawyers "I heard you were a scoundrel! A super asshole! I give such people the BOMB treatment..."
As a teen he had an article published in a magazine about making a bomb, and it was funny!
And I think he adopted many other tones in different letters - young, scared, old, right wing, Christian, etc.
The only trouble he ever got into as a prof at U CAL Berkeley was when he wrote a letter pretending to be another faculty member, a ruse to get that person in trouble.
These are the Ellen poems and letter. Like Zodiac, Ted could be funny, sarcastic and cutting. Like the Riverside writer, he could do a poem.
Ellen poems and letter. Uses Zodiac terms "fat ass" and "nasty":



