The ship carrying Francis Cabot Lowell and his family home from England in the summer of 1812 was intercepted by a British war squadron, which held the passengers and crew for some days at the British base at Halifax, Canada. Lowell’s baggage was subject to several intensive searches, for his captors had been warned that he may have stolen designs for power textile weaving machinery, a serious crime in England. Lowell, indeed, had done just that — but, aware of the risk, had committed the designs to memory.