Mccully Emily Arnold - Marvelous Mattie How Margaret E. Knight Became An Inventor - Hardcover Dance Description: Cheyenne a blind sixteen

Mccully Emily Arnold - Marvelous Mattie How Margaret E. Knight Became An Inventor - Hardcover Dance Description: Cheyenne a blind sixteenBinding: Hardcover Description: With her sketchbook labeled My Inventions and her father's toolbox Mattie could make almost anything toys sleds and a foot warmer. When she was just twelve years old Mattie designed a metal guard to prevent shuttles from shooting off textile looms and injuring workers. As an adult Mattie invented the machine that makes the square bottom paper bags we still use today. However in court a man claimed the invention was his

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