There are slides devoted to this topic: Lecture 9, pp. 48-51.
Learn a bit about the history, developments, and significance of the revolutionary IBM System/360 on the Computer History Museum site.
Freed, Les, The History of Computers, “IBM’s System/360,” 67-71
Campbell-Kelly and Aspray, Computer: A History of the Information Machine, 117-137 (discussed in context with IBM’s supremacy over the “seven dwarves” of computing)