The National STEM Education Digital Library: A Progress Report Lee Zia Lead Program Director, NSDL Program National Science Foundation This session will provide a progress report on the National Science Foundation's program to support the development of the National Science, Technology, Engineering, and Mathematics Education Digital Library (NSDL). To date three sets of grants have been made in three tracks: 1) Collections, 2) Services, and 3) Targeted Research. In addition, a Core Integration activity is developing the "technical and organizational glue" to bind distributed users with distributed collections and services. Members of the core integration team will also participate and provide an update on the ongoing work on access and authentication, and the NSDL's sustainability efforts.