IPUMS USA contains harmonized census and American Community Survey (ACS) data from 1790 to the present. For the period 1850 to 1940, IPUMS includes 100% of individuals in the decennial censuses. For t
Danish Gallup Omnibus Data 1979 comprises 24 omnibus surveys carried out by the Danish Gallup Institute in 1979. #Each survey contains a number of recurring questions as well as a number of specia
