Through Amazon, I have access to some partial data on the market for my book. Its sales are nothing to write home about by commercial standards, although they would be strong for an academic book. The Typewriter Revolution is usually ranked in Amazon's top 100,000 titles, which I suppose is all right out of millions.
More interesting is the above map showing how the book has sold in the US. Presumably, sales of this book should line up pretty well with the amount of interest there is in typewriters in an area.
The map holds a few surprises:
Portland, Oregon, where I stayed for two weeks in summer 2015, gives the impression of having a high typewriter-to-person ratio, but sales have not been fabulous there.
Denver has been much stronger, even though I am aware of only a couple of collectors there.
Tampa-St. Petersburg, Florida, has also been an excellent market, surely thanks to Tampa Type, a project of stationery shop The Paper Seahorse. Stationers and typewriters are a great combination; recently I've been working with the owner of a paper shop in Columbus, Ohio who is starting to sell typewriters.
The book is also doing well in Washington, DC, where nearly as many copies have sold as in New York.
My publisher hoped that The Typewriter Revolution would be a surprise hit, but the surprise did not come to pass, despite a great run of interviews and book signings. It may get a little boost from the film California Typewriter. My hope is that word of mouth will keep it going, and it will eventually become a classic for all participants in the necessarily-small typewriter insurgency. Once you give up unrealistic dreams of fame, there is something very satisfying about being able to provide fuel to a rebellion that smolders silently, individually, out of the digital limelight—but which, I believe, has real benefits for its participants and, indirectly, for the larger culture.