What is the Data?
- HOLC maps
- Neighborhood descriptions (text data)
Data Type
- Geospatial data (maps)
- Textual data (descriptions)
Input Data & Sources
- U.S. National Archives
- Historical government records
Output Data
- Interactive maps
- Searchable database
End Result
Users can explore cities and see how neighborhoods were graded and described.
Is Data Shared?
Yes—open access, which is a key DH best practice.
DH Best Practice
Strong documentation and transparency of sources.

