In what year did Edward D. Miller retire as president and chief executive officer of the national association?

Edward D. Miller retired as president and chief executive officer of the national association in 1997. This year is significant not just for Miller's departure but also for the changes and transitions that occurred within the organization during that time. His tenure was marked by efforts to expand programs and reach more students, laying a foundation that influenced the future direction of the national association.

Understanding this context is essential, as it helps to recognize the impact of leadership changes on an organization and how they can shape its vision and goals moving forward. Each of the other years listed also marks important events or changes in other contexts, but 1997 is specifically notable for Miller's retirement, marking the end of an era in the management of the national association.