Collaboration is an increasingly popular trend in libraries, archives, and museums. Whether projects make use of limited resources by pooling them or share the expense of building new resources, funding agencies are encouraging organizations to work together. However the study of collaboration in a library complex lags behind these opportunities. This case study takes an in-depth look into the tools, processes, and structures employed by a multi-institutional project planning group through interviews and examining documentation. The particular planning project studied here resulted from an administrative mandate and proceeded with the full support of an established consortial arrangement. The purpose of the study was to unveil factors and behaviors that facilitate successful collaboration under friendly circumstances. It explores the coordination processes involved when project planning participants have different roles, goals, and responsibilities.