I´m working on a project that uses the distance and travel time within different PUMAs across the country as input for some estimations. To calculate the distance and travel time, I need the geocoordinates of each PUMA. Since the definition of PUMAs has changed across time, it is essential to know the latitude and longitude of the population centroid of each PUMA for the 1980, 1990, and 2000’s definitions.
In the geographic tools of IPUMS USA (https://usa.ipums.org/usa/volii/tgeotools.shtml), I found files with information for these years, but none of these files contain the geocoordinates corresponding to each PUMA. I also checked the TIGER/Line Shapefiles of the Census Bureau (https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.1992.html), but the oldest available information is for 1992, and it does not contain anything related to PUMAs.
Therefore, can anyone tell me if this information exists and if that is the case, where to look for it, or where I can request it, please?