| http://www.w3.org/ns/prov#value | - On December 5, 1974, United States Customs opener-verifier-packer James A. Deveau received at the Bureau of Customs in Oakland and San Francisco five first class envelopes which had been sent to him by the post office of an APO postal unit in Thailand.1 These envelopes had not been opened, and attached to each of them was a letter from the postal authorities stating that each envelope had been sni
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