What did people in the 1900s write books with?

Answer 1

They typed them up and sent them to the publisher, who printed them out with a printing press. They used the same technology until the home computer became popular around the 1980's, at which time publishing companies also began using computerized printing.

Answer 2

In the 1900s, people typically wrote books using typewriters or by hand with pens or pencils. Typewriters were a popular tool for writers to produce their manuscripts before electronic word processors became widely used in the latter part of the century.