The ADL currently provides access over the World Wide Web to a subset of the MIL's holdings, as well as other geographic datasets.
Coverage is worldwide but primarily concentrated in the Southern California area.
These standard interfaces, all of which are implemented in HTTP, support session management, collection discovery and evaluation, metadata searching, metadata retrieval and online holding retrieval. An XML-based metadata encoding scheme and a simple Boolean query language have also been developed. The Alexandria Digital Library architecture. Proceedings of the Second European Conference, ECDL'98 . Knossos Royal Village, Heraklion, Crete, Greece, September 21-23, 1998.