Weegy: I believe the use of ruled paper began when sheet music was first transcribed. Oldest known pieces date back to the 13th Century.
The invention of 8.5-by-11 loose leaf paper also had a practical origin. [ Richard Prentice Ettinger in 1913 was working as a law clerk for Charles W. Gerstenberg when they wrote a book on corporate finance. They began publisher Prentice-Hall and published the finance book on credit. The tax laws changed so ... (More)