This section is from the book "Bepler's Handy Manual of Knowledge And Useful Infomation", by David Bepler. Also available from Amazon: Bepler's Handy Manual of Knowledge and Useful Information.
The distance from the home-plate to the pitcher's position is 50 feet, so that must be the distance the ball is pitched. The distance from the home-plate to the first base is 90 feet, and 127 feet 4 inches to second base.
 
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