Who invented what, and when did they do it? From the ancient Egyptians to Thomas Edison, from the telephone to the space shuttle, this book length timeline is packed with inventions and inventors. Pick a point and start exploring! more
Who invented what, and when did they do it? From the ancient Egyptians to Thomas Edison, from the telephone to the space shuttle, this book length timeline is packed with inventions and inventors. Pick a point and start exploring! less