I’m trying to make sense of 1960 Census tracts.
I realize, by way of an earlier Q&A posting, that due to two different data sources and a lot of missing data, we should anticipate redunancy in the 1960 tracts. For confirmation, I created a FIPS variable using ‘state + counnty + aggprefix + aggtract + aggsuffix’, but there are many duplicates. Is there any documentation as to how to negotiate this when creating unique 1960 tract FIPS identifiers?
Is there a different ID that’s been created and applied to 1960 census data in the decades since that has become the norm/convention for unique 1960 tract FIPS identifiers (like, GISJOIN, or the like)? If so, is there any documentation explaining this?
Any guidance/references will be greatly appreciated!