From NSDLWiki

CRS replacement requirements

Collection editing

• Maintain collection information required for harvests
  • Title
  • Description
  • ...as much additional metadata as can be had
  • Brand information
  • For collections that provide metadata items:
    • Metadata Provider (Collection equivalent)
    • Aggregation associated with harvested metadata for the above Provider.
    • Base-URL of the OAI service
    • Sets to harvest
    • Metadata format to harvest
    • Frequency of the harvest

• Services from the Collection Manager:
  • Provides an RSS feed of collections with the most recent updates
  • CRS/NCS stores collection information
  • All CRS collection information is in a mySQL database on phpdev.nsdl.org

• RSS feed of new in the library information:

 http://nsdl.org/news/?pager=newnsdl

• Browse By Collection:

http://crs.nsdl.org/collection/

• Some references from Alex:

NSDL.org links:
http://nsdl.org/browse/
http://nsdl.org/?pager=sitemap
http://nsdl.org/help/?pager=collections
http://nsdl.org/resources_for/first_time_users/  (under "Basic Digital Library Use", section 1, 4th bullet AND under section "What Can I Do at NSDL.org?", 4th bullet) 
http://recommend.nsdl.org/   (Left nav item "Collections")