I am trying to find birthplace data by US county for Cuba (1950 and 1960) and Puerto Rico (1950-1990). I found these birthplaces in the IPUMS USA micro data files but did not find the equivalent in the NHGIS csv county level files. What am I doing wrong?
Is there any way how I can get county level birthplace data at the same granularity in terms of birthplaces as available in the IPUMS USA micro data?
Thank you very much for your help!