True fact: writers used to trade tips for freshening up a typed manuscript that had been out and back a few times without finding a home. An electric iron set on “warm” was sometimes involved.
The first time I added the words “please consider this a disposable manuscript” to a cover letter, I felt a beautiful warm God-I-love-technology glow.
I expect that the first writer to send out a typed story for submission felt the same way, because if typing up a story was a drag, making a fair copy by hand using pen and paper must have been a thousand times worse.
Dr. Doyle's Blog 
Mark Twain was an early adopter of the typewriter.