This document is Marianne Hermann's capstone portfolio project summarizing three case study articles. The first case study examines the Ohio State leadership model and discusses initiating structure and consideration dimensions of leadership. The second case study relates to professional and personal changes Marianne has experienced. The third discusses span of control and the effects of centralization vs decentralization on organizations. Overall, the portfolio analyzes leadership styles and challenges based on Marianne's experiences and lessons from the case studies.