The research documented in this report builds on earlier work in the 1980s in the area of on-the-job experiences in developing effective leaders. The current study was designed to answer the following: (1) What are the significant events from which African American managers learn and develop? (2) Are the key events and lessons learned different for African American managers than for white managers? and (3) Are there new experiences or lessons reported since the original 1980s work? Using a sample derived from a more diverse work force, the current study aimed to help determine if there are new or additional key events and lessons not reported in the earlier research. Also, it explored the effect that a manager's race or ethnicity has on career experiences and how managers might develop as a result of these experiences. The study included 288 managers who completed a preprogram survey and, as a way of reporting on-the-job events, answered two questions: What happened? and What did you learn from it? Participants reported 813 key events. The results show that there are important differences in the types of experiences and lessons learned reported by African American managers and white managers. A list of suggested readings is included. Appended are: Key Events Categories; Lesson Categories; Analysis of Events Tables; and Analysis of Lessons Tables. (Contains 43 tables.) (WFA)