October 9, 1959:
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"A gray steel twin engine plane from the United States drops five parachutes with military supplies into the Aguacatales area, near the town of Minas de Matahambre in the province of Pinar del Rio. Rebel Army forces confiscate all of them"

Source: Fabián Escalante, The Secret War: CIA Covert Operations Against Cuba, 1959-1962, Secret War, p. 156