From today's New York Times:
Martin Tytell, whose unmatched knowledge of typewriters was a boon to American spies during World War II, a tool for the defense lawyers for Alger Hiss, and a necessity for literary luminaries and perhaps tens of thousands of everyday scriveners who asked him to keep their Royals, Underwoods, Olivettis (and their computer-resistant pride) intact, died on Thursday in the Bronx. He was 94. . . .Ian Frazier's 1997 article is online:
Mr. Tytell was proud of the rarity of his expertise, and relished the eccentric nature of his business. "We don't get normal people here," he said of his shop. And he was aware that his connection to the typewriter bordered on love.
"I'm 83 years old and I just signed a 10-year lease on this office; I’m an optimist, obviously," Mr. Tytell told the writer Ian Frazier in a 1997 article in The Atlantic Monthly, commenting on the likelihood that typewriters weren’t going to last in the world much longer. "I hope they do survive — manual typewriters are where my heart is. They're what keep me alive."
Typewriter Man (The Atlantic)