Ships were of course carrying cargo for centuries before the idea of carrying passengers in any sort of vacation sense existed. But once the Black Ball line decided to prioritize passenger comfort, the development of the cruise industry began.
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- Albion, Robert G. “Planning the Black Ball Line, 1817.” The Business History Review. Vol. 41, No. 1 (Spring, 1967), pp. 104-107. https://www.jstor.org/stable/3112423
- “2018 Cruise Industry Overview.” The Florida-Caribbean Cruise Association. https://www.f-cca.com/downloads/2018-Cruise-Industry-Overview-and-Statistics.pdf