I am interested in evaluating a large multi-intervention health program to improve childhood and maternal health. The interventions are being led by a technical support unit. Although extensive M&E is being conducted on the individual interventions (e.g. institutional deliveries, maternal mortality), there is no overall evaluation the actual support unit itself. I am not familiar with organizational evaluation, and would like to find papers or recommendations on how to conduct macro-level evaluations of TSUs, or similar organizations.