Union Catalog project has been independent from the Program Office since 2003. It not only offers integrated searching convenience, but is also the best tool to display project outcomes for NADP.

• To construct an interoperation structure in digital collections institutions; to analyze current system condition
• To construct and develop OAI-based Union Catalog of digital archives
• To construct and test OAI-based Union Catalog of NDAP
• To design “Handle system” and “Open URL” for digital archives
• To evaluate system cost-benefit and its feasibility; to construct an interoperation structure in related institutions