The Street Name Dictionary (SND) contains street names and street codes for New York City. Street names (which include names of other geographic features as well) are associated to street codes. Alias street names and variant spellings are related through a street code hierarchy.

All previously released versions of this data are available at BYTES of the BIG APPLE- Archive

The LION Differences File (LDF) documents segment and node level changes that have occurred in the LION file between two subsequent releases. This file allows a user who "ties" organizational data to DCP's Segment ID and/or Node ID to migrate their data appropriately when these changes occur.
All previously released versions of this data are available at BYTES of the BIG APPLE- Archive.