[2] He, and his father met Ernest Hemingway at a Jai alai game in Havana, and they became family friends.

[2] Argüelles' father owned the Frontón Jai Alai, the largest Jai Alai arena in Hanava.

[3] In Cuba during World War II, Argüelles was instrumental in the FBI effort to hunt Nazis in Latin America, and was involved in some way with Hemingway's anti-submarine missions.

[4] In the late 1950s, he had become one of Hemingway's five closest friends, alongside his cousin, Mario Menocal.

[7] Argüelles and his family fled Cuba around 1960 to escape persecution by the new government of Fidel Castro, and wound up settling in exile in Little Havana, in Miami.