"study number","owner","title","investigators","doi","time period"
"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"
"02896","ICPSR","Historical, Demographic, Economic, and Social Data: The United States, 1790-2002","Haines, Michael R.; Inter-university Consortium for Political and Social Research","http://dx.doi.org/10.3886/ICPSR02896.v3","2002"