Gordon Tullock dictated his writing using a tape recorder, not software, and then had someone type it out.

Judge as of 2019-12-23. True: reliable accounts (from colleagues, biographers or memoirs) say Gordon Tullock wrote by dictating into a tape recorder (or dictation machine), with the recordings then typed up by someone else, and not by using dictation software. Mostly true: he dictated to a typist or secretary in a broadly similar way (e.g. live dictation rather than tape), or a minor detail differs. Mixed: sources show he dictated only some of his work and wrote much of it by hand or typed it himself. Mostly false: dictation was rare or incidental for him. False: reliable sources show he did not dictate his writing, or that he used software for it.

Set before the research began.

1. E1 Professor Gordon Tullock: A Personal Remembrance on His Centennial - Econlib Econlib (Library of Economics and Liberty) · 7 February 2022

   “After six months, he left his dictated 500 or so manuscript pages on macroeconomics on my desk.”

2. E2 Professor Gordon Tullock: A Personal Remembrance on His Centennial - Econlib Econlib (Library of Economics and Liberty) · 7 February 2022

   “the flow of words and incisive arguments coming from Gordon Tullock’s pen (or, rather, from his Dictaphone).”

I rated this mostly true. The evidence comes from a personal remembrance of Tullock published on Econlib. In that remembrance, McKenzie says Tullock left about 500 dictated manuscript pages on his desk (E1). He also says Tullock's work came from his Dictaphone, which is a dictation machine and not software (E2). This supports the core of the claim. However, neither passage says explicitly that someone else typed up the recordings, and the evidence is a single source, so it falls short of fully true.