Baltimore Historic Census Data

Sixteenth Census of the United States, Census of Population and Housing 1940: Baltimore City Tracts

United States Census Bureau (2013-01-02)

All of the tables in the 1940 Census: Baltimore Census Tracts report (SuDoc C3.940-38 M36 A Level Reference) were hand-entered into individual Excel files, error-checked, then converted to comma separated values files ...
Fifteenth Census of the United States 1930: Baltimore Wards

United States Census Bureau (United States Government Printing Office, 1932)

Table 23 was hand-entered into an Excel file, checked, converted to a comma separated values file (.csv), and Stata dataset. These files may be used for statistical geospatial analysis.