Sholes and Glidden typewriter length. The redesigned platen also introduced the modern spacing functionality (horizontal and axial movement providing letter and line spacing, respectively). The cylindrical platen became "an indispensable part of every standard [typewriter]". By the end of 1872, the appearance and function of the typewriter had assumed the form that would become standard in the industry and remain largely unchanged for the next century. Although the machine possessed a cylindrical platen and what was essentially a QWERTY keyboard, two design elements that would later become essential were lacking: the ability to write in upper and lowercase letters and "visible" print. Although the
Typewriter in the Sky and again in 1977 as "Fear & Typewriter in the Sky", published by Popular Library. In the UK, the combined work was first published in 1952 as number 409 in the Cherry Tree Book series by Kemsley Newspapers Limited. The title for this 1952 UK edition was "Typewriter in the Sky: An Adventure in Time". "Typewriter in the Sky" was republished in 1995 by Bridge Publications. Science fiction author Kevin J. Anderson wrote an introduction to the 1995 edition of the book. The same year Bridge Publications released an audio edition read by Jim Meskimen. The audio edition was an