I’ve read that Allen had a Royal typewriter similar to one used to type one of the Z letters. From my understanding, those old typewriters often have unique characteristics, like worn or sticky keys. Was there ever an analysis done to try and see if ALA’s typewriter was actually THE typewriter used?
This is from Tom Voigt’s site:
In a telephone interview, Tom Voigt, the webmaster who created http://www.zodiackiller.com and launched it on March 20, 1998, told the Ledger Dispatch his theory of why the current task force into the Zodiac killings was also formed in 1998. "Whenever I’d get an inquiry from the media or someone (about the Zodiac), they (the police) would also get one," he explained, "But they didn’t have any answers. In 1991 they searched for a knife at Allen’s residence, they found a knife at Allen’s residence. They looked for a typewriter at Allen’s residence. They found a typewriter at Allen’s residence. To the best of my knowledge they have done nothing with the knife or the typewriter and have not ever been able to put two and two together."
AFAIK the typewriter business is largely a Graysmith-ism.
Meaning that yes, ALA had a typewriter – but no, it wasn’t actually tested. Why? Perhaps because it wasn’t even the same model. Similar typewriter but not the same. That’s what I’ve heard, anyway.