"study number","owner","title","investigators","doi","time period"
"09474","ICPSR","Census of Population, 1880 [United States]:  Public Use Sample (1 in 1000 Preliminary Subsample)","Ruggles, Steven; Menard, Russell R.","http://dx.doi.org/10.3886/ICPSR09474.v1","1880"
"09453","ICPSR","Census of Population, 1910 [United States]: Oversample of Black-headed Households","Morgan, S. Philip; Ewbank, Douglas","http://dx.doi.org/10.3886/ICPSR09453.v2","1910"
"09166","ICPSR","Census of Population, 1910 [United States]: Public Use Sample","Preston, Samuel H.","http://dx.doi.org/10.3886/ICPSR09166.v1","1910"
"08236","ICPSR","Census of Population, 1940 [United States]: Public Use Microdata Sample","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR08236.v1","1940"
"08251","ICPSR","Census of Population, 1950 [United States]: Public Use Microdata Sample","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR08251.v1","1950"
"07756","ICPSR","Census of Population and Housing, 1960 Public Use Sample: One-in-One-Hundred Sample","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR07756.v1","1960"
"00054","ICPSR","Census of Population and Housing, 1960 Public Use Sample [United States]:  One-In-One Thousand Sample  ","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR00054.v1","1960"
"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"
"07924","ICPSR","Census of Population and Housing [United States], 1960 Public Use Sample:  Modified 1/1000 State Samples ","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR07924.v1","1980"
"02930","ICPSR","Census Tract Data, 1940: Elizabeth Mullen Bogue File","Bogue, Donald","http://dx.doi.org/10.3886/ICPSR02930.v1","1940"
"02931","ICPSR","Census Tract Data, 1950: Elizabeth Mullen Bogue File","Bogue, Donald","http://dx.doi.org/10.3886/ICPSR02931.v1","1950"
"02932","ICPSR","Census Tract Data, 1960:  Elizabeth Mullen Bogue File","Bogue, Donald","http://dx.doi.org/10.3886/ICPSR02932.v1","1960"
"07552","ICPSR","Census Tract-Level Data, 1960","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR07552.v1","1960"
"08427","NACDA","Old Age in the United States, 1880","Jensen, Richard; Smith, Daniel Scott; Friedberger, Mark W.; Dahlin, Michel R.; Reiff, Janice","http://dx.doi.org/10.3886/ICPSR08427.v1","1880"
"08428","NACDA","Old Age in the United States, 1900","Jensen, Richard; Smith, Daniel Scott; Friedberger, Mark W.; Dahlin, Michel R.; Reiff, Janice","http://dx.doi.org/10.3886/ICPSR08428.v1","1900"
"09430","ICPSR","Southern Agricultural Households in the United States, 1880","Sutch, Richard; Ransom, Roger","http://dx.doi.org/10.3886/ICPSR09430.v1","1880"
"07825","ICPSR","United States Census Data, 1900: Public Use Sample","Preston, Samuel H.; Higgs, Robert L.","http://dx.doi.org/10.3886/ICPSR07825.v1","1900"
"08353","ICPSR","United States Microdata Samples Extract File, 1940-1980:  Demographics of Aging","Inter-university Consortium for Political and Social Research","http://dx.doi.org/10.3886/ICPSR08353.v2","1980"