We just learned about Leonardo da Vinci's Codex Arundel.
Another famous book of inventions that Leonardo wrote was called the Paris Manuscripts.
These were writings of his thoughts on science and inventions he dreamed up between the years of 1488 and 1505.
They are called the Paris Manuscripts because after Leonardo died these writings were all collected and stored in a museum in Paris.
The Paris Manuscripts have over 2,500 pages of Leonardo's writings.
He wrote about helicopters, submarines, geometry, botany, engineering, physics, painting, water, flight, and astronomy.
One of the most famous of his drawings was of a design for a helicopter he called the Aerial Screw.
(from: wikipedia - leonardo's aerial screw)
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