The National Network of Libraries of Medicine NNLM Community Engagement Center CEC has been funded for $71,240 to establish the infrastructure of the NNLM Community Engagement Network CEN. This project would set the NNLM CEN up to effectively move from a pilot project to a sustainable, evidencebased national model with the infrastructure needed to support the goals of the NNLM National Program NP and the Research Program 71. The NNLM CEN is at a critical juncture where community engagement and outreach models and expectations can be standardized based on previous experience. Evaluation plays a critical role in model development to determine which components and activities of the model are necessary for goal attainment. As the CEN continues to evolve, the evaluation is evolving as well. This proposed project would support continued CEN development; refinement of the national model and evaluation protocols; and identification of the CEN core components and activities.