
To learn to type, one had to own a typewriter, or else practice at a school or business. Then, also, one could purchase a “learner’s typewriter,” a simple keyboard for practicing touch typing. ETCetera presents a series of these machines here. Collectables, indeed!
From The Phonographic World (New York), September 1886 —

Learning keyboards were a little more sophisticated in the 1920s. The Flashwriter mechanically “flashed” letters upon a screen at the top of the machine. From Typewriter Topics, October 1921 —

The Flashwriter was associated with a school of typing:
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I never knew such devices existed.