The School Journal, October 4, 1902 —
The Pocket Typewriter (or Recorder) was a novelty item, and it is uncertain any were manufactured commercially. ETCetera wrote about this variety of typewriters in its June 2008 issue (see here), observing that development of these machines continued even into modern times.
In 1899 and 1900, Eugene McClean Long filed two patents for his ingenious machine: U.S. 653,104 (here) and U.S. 647,853 (here), which improved upon the design. It’s a shame that no production models are extant.
Though some thought not…
A columnist in the 1960s suggested working models existed:
Mon, Nov 12, 1962 – Page 6 · Muncie Evening Press (Muncie, Indiana, United States of America) · Newspapers.com
Even Owens speaks of a photo of the pocket typewriter appearing in the Standard Book of Knowledge. An American Home Educator (1904), but that image is of a Lambert, which is not pocket-sized by any stretch. See here for this misadventure.
Long later developed a series of golf products.
Popular Science Monthly, February 1918 —
© 2019, Mark Adams. All rights reserved.
If it were ever produced it would have been the ultimate spy typewriter.