"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"
"08109","ICPSR","Census of Population and Housing, 1970 [United States]:  Master Enumeration District (MED) Lists  ","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR08109.v2","1970"
"08037","ICPSR","Census of Population and Housing, 1980 [United States]:  Summary Tape File 2B ","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR08037.v1","1980"
"09516","ICPSR","Census of Population and Housing, 1990 [United States]: Public Law (P.L.) 94-171 Data","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR09516.v1","1990"
"09783","ICPSR","Census of Population and Housing, 1990 [United States]: Public Law (P.L.) 94-171 Data (One-Half Sample Adjusted Redistricting File)","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR09783.v1","1990"
"03515","ICPSR","School District Geographic Reference File, 1969-1970  ","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR03515.v1","1970"
"03516","ICPSR","School District Geographic Reference File, 1973-1974  ","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR03516.v1","1974"