Comment: Sorry I cannot help w/ your unanswered question.

My investigation lead nowhere. My conjecture is, there might be a typewriter involved.

The machine is at Bliss's, grimly pursuing its appointed mission, slowly & implacably rotting away at another man's chances for salvation.

I have sent Bliss word not to donate it to a charity (though it is a pity to fool away a chance to do a charity an ill turn), but to let me know when he has got his dose, because I've got another candidate for damnation. You just wait a couple of weeks & if you don't see the Type-Writer coming tilting along toward Cambridge with the raging hell of an unsatisfied appetite in its eye, I lose my guess.
- Letter to William Dean Howells, 25 June 1875

Twain's typewriter: ...I will now claim -- until dispossessed -- that I was the first person in the world to apply the typewriter to literature...The early machine was full of caprices, full of defects--devilish ones. It had as many immoralities as the machine of today has virtues. After a year or two I found that it was degrading my character, so I thought I would give it to Howells...He took it home to Boston, and my morals began to improve, but his have never recovered.
- "The First Writing Machines"

Please do not even divulge the fact that I own a machine. I have entirely stopped using the Type-Writer, for the reason that I never could write a letter with it to anybody without receiving a request by return mail that I would not only describe the machine but state what progress I had made in the use of it, etc., etc. I don't like to write letters, and so I don't want people to know that I own this curiosity-breeding little joker.
- Letter, 19 March 1875

One of Mark Twain's typewriters, a Hammond model circa 1880,
is located in the Mark Twain Museum in Hannibal, MO