Two of the best book quotes about prototype time machine
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Fifteen-year-old Dolf uses a prototype time machine and gets stuck in the Middle Ages. Trying to find his way back to the twentieth century, he joins a children’s crusade of almost ten thousand children on their way to the Holy Land.
A time machine catapults a twentieth-century teenager -intelligent and headstrong - to the thirteenth century. Rudolf Hefting of Amsterdam thought the was engaged in an experiment that would take him back to the Middle Age to a tournament of knights.