The Wild Wild West (1965) : 3x1

When Victor Freemantle, a dangerous revolutionary, steals the U.S. Constitution, agents James West and Artemus Gordon are sent by the government to the Panhandle Strip in Texas to recover it. West and Mr.Grigsby, a curator of the United States Archives, go to a secret underground hideout where Constitution is being held to verify the authenticity of the document. After determining that it is the genuine article, West and Grigsby are presented with Freemantle's demands: They are requested to cease negotiations with Mexico and the U.S. is to recognize the Panhandle Strip as a Sovereign enclave between the borders. A one-millon dollar ransom in gold must also be paid. As part of their agreement, Freemantle holds Grisby hostage until West returns. But West and agent Artemus Gordon decide to ignore the demands and rescue the Constitution themselves by infiltrating Freemantle's castle; Gordon disguises himself as a whiskey salesman and West hides underneath his wagon.