I'm thinking of trying to enhance the call-number browse pages on a
Millennium catalog with meanings of the classification ranges taken from
the LoC Classification database.

http://id.loc.gov/authorities/classification.html

a typical call-number browse page might look like this:
http://librarycatalog.vts.edu/search~S1?/cBX100.7.B632+1999/cbx++100.7+b632+1999/-3,-1,,E/browse<http://librarycatalog.vts.edu/search%7ES1?/cBX100.7.B632+1999/cbx++100.7+b632+1999/-3,-1,,E/browse>

I'd like to intersperse the call-number listing with call-number range
meanings like

BX100 - Christian denominations - Eastern churches

Has anyone tried this?  Can you point me to the API documentation for the
LC Classification?

Cindy Harper