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Thomas Cook organizes his first trip, a rail journey from Leicester to Loughborough, England.
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Cook leads his first tour outside of England, taking a group of travelers to Switzerland.
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Cook opens his first travel agency in London.
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Cook introduces the circular note, an early form of the traveler's cheque.
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Cook dies, and his son, John Mason Cook, takes over the business.
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The company is sold to a group of private investors.
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Thomas Cook is nationalized by the British government.
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The company is privatized again.
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Thomas Cook is acquired by a German bank, Westdeutsche Landesbank.
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Thomas Cook merges with MyTravel Group to form Thomas Cook Group plc.
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Thomas Cook collapses into bankruptcy, leaving hundreds of thousands of travelers stranded around the world.
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A new company, Thomas Cook Travel Money, is launched by Fosun Tourism Group, which had acquired the Thomas Cook brand in 2019.