In Cincinnati, the United States Mail Steamboat Company replaces the tubular boilers on its new boat
Following the outcry over the massive loss of life in three steamboat disasters on American rivers in a week, the United States Mail Line, plying between Cincinnati and Louisville, Kentucky, withdrew its new steamboat United States and replaced its state-of-the-art tubular boilers with older double-flued boilers. The new tubular boilers were thought to be the cause of the epidemic of deadly boiler explosions. (By John Osborne)
William C. Cochran, "Perils of River Navigation," Proceedings of the Mississippi Valley Historical Association; Volume X Part II, for the Year 1919-1920; 1921; p. 329.