“JAN 1960: The CIA sets up a Task Force WH-4, Branch 4 of the Western Hemisphere Division to implement President [Dwight D.] Eisenhower’s request for an ambitious covert program to overthrow the Castro government. Jacob Esterline, Guatemala station chief between 1954-1957, is put in charge of WH-4.” [The 15th of the month used for date sorting purposes only.]
“The Bay of Pigs Invasion/Playa Giron: A Chronology of Events,” The National Security Archive, NSArchive2.gwu.edu