"study number","owner","title","investigators","doi","time period"
"09770","ICPSR","Census of Population and Housing, 1990 [United States]: Summary Tape File 2A","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR09770.v3","1990"
"03144","ICPSR","Census of Population and Housing, 2000 [United States]:  Public Law (P.L.) 94-171 Data","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR03144.v3","2000"
"22540","ICPSR","Census of Population and Housing, 2000 [United States]: State Legislative District Summary File, Sample","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR22540.v1","2000"
"33442","ICPSR","Census of Population and Housing, 2010 [United States]: National Summary File of Redistricting Data","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR33442.v1","2010"
"33441","ICPSR","Census of Population and Housing, 2010 [United States]: Redistricting Data (Public Law 94-171) Summary File","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR33441.v1","2010"
"33461","ICPSR","Census of Population and Housing, 2010 [United States]: Summary File 1","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR33461.v1","2010"