This document summarizes Constance Malpas' presentation on collective collections and right-scaling cooperative stewardship. It discusses how a significant share of institutional collections are duplicated across libraries, both within regions and between regions. There is a growing trend toward more coordinated collection management at various scales, from individual institutions to regional groups to global. The optimal scale for shared print management involves taking a system-wide view of collections and balancing local needs with broader preservation. Key factors for successful shared print programs include robust trust networks between participating libraries and scalable infrastructure to reduce costs.