"study number","owner","title","investigators","doi","time period"
"08533","ICPSR","Census of Population and Housing, 1980 [United States]:  Special Tabulations of Population 60 Years and Over","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR08533.v1","1980"
"09873","ICPSR","Occupational Data from the 1860 United States Census","Fogel, Robert W.","http://dx.doi.org/10.3886/ICPSR09873.v1","1860"
"07568","ICPSR","United States Southern Cities in 1870 and 1880:  A Study of Individuals and Families","Goldin, Claudia","http://dx.doi.org/10.3886/ICPSR07568.v1","1880"