On 20 August 1937, Camillus and Norma Duncan Darden boarded the S.S. Cuba at Havana, Cuba, for a one-day return to the United States arriving in Tampa, Florida, on the 21st. The Peninsular & Occidental Steamship Company operated the Cuba.

U.S. Citizen Passenger Lists of Vessels Arriving at Tampa, Florida, digitized at Records of the Immigration and Naturalization Service, 1787 – 2004 [database on-line], http://www.ancestry.com.