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In page St. Louis:

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Slaves worked in many jobs on the waterfront and on the riverboats. Given the city's location close to the free state of Illinois and others, some slaves escaped to freedom. Others, especially women with children, sued in court in freedom suits, and several prominent local attorneys aided slaves in these suits. About half the slaves achieved freedom in hundreds of suits before the American Civil War. The printing press of abolitionist Elijah Parish Lovejoy was destroyed for the third time by townsfolk. He was murdered the next year in nearby Alton, Illinois.[citation needed]