Godfrey and Utley observe that the documents show customs and laws that changed over time.

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Customs staff had asked to photocopy the documents, and Johnson said he agreed, chatted and signed autographs for them before going on his way.

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The Justice Department is investigating whether Panalpina bribed customs officials in Nigeria and other countries and has requested documents from the oil service companies and Royal Dutch Shell, according to securities filings.

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The Immigration and Customs Enforcement agency plans to use the iPhone, dropping RIM in the process, according to solicitation documents spotted by Mashable on Friday.

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