Sholes and Glidden typewriter seeking to diversify, Remington further refined the typewriter before finally placing it on the market on July 1, 1874. During its development, the typewriter evolved from a crude curiosity into a practical device, the basic form of which became the industry standard. The machine incorporated elements which became fundamental to typewriter design, including a cylindrical platen and a four-rowed QWERTY keyboard. Several design deficiencies remained, however. The Sholes and Glidden could print only upper-case letters—an issue remedied in its successor, the Remington No. 2—and was a "blind writer", meaning the typist could not see what was being written as it
Typewriter in the Sky Science Fiction Source Book" (1984), "His [Hubbard's] best work is outstanding within the pulp tradition: "Typewriter in the Sky" is a fine fantasy about a man who gets trapped within a story written by a pulp writer". The book is listed in "Fantasy: The 100 Best Books" (1988), by James Cawthorn and Michael Moorcock. Robert E. Weinberg, Stefan R. Dziemianowicz, and Martin Harry Greenberg write in "Rivals of Weird Tales: 30 Great Fantasy and Horror Stories from the Weird Fiction Pulps" (1990) that "Typewriter in the Sky" is classed among stories published in "Unknown" which "still rank as some of