"study number","owner","title","investigators","doi","time period"
"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"
"02932","ICPSR","Census Tract Data, 1960:  Elizabeth Mullen Bogue File","Bogue, Donald","http://dx.doi.org/10.3886/ICPSR02932.v1","1960"
"02933","ICPSR","Census Tract Data, 1970:  Elizabeth Mullen Bogue File","Bogue, Donald","http://dx.doi.org/10.3886/ICPSR02933.v1","1970"
"21940","CCEERC","NICHD Study of Early Child Care and Youth Development: Phase I, 1991-1995 [United States]","United States Department of Health and Human Services. National Institutes of Health. Eunice Kennedy Shriver National Institute of Child Health and Human Development","http://dx.doi.org/10.3886/ICPSR21940.v1","1994"
"21941","CCEERC","NICHD Study of Early Child Care and Youth Development: Phase II, 1996-1999 [United States]","United States Department of Health and Human Services. National Institutes of Health. Eunice Kennedy Shriver National Institute of Child Health and Human Development","http://dx.doi.org/10.3886/ICPSR21941.v1","1999"
"21942","CCEERC","NICHD Study of Early Child Care and Youth Development: Phase III, 2000-2004 [United States]","United States Department of Health and Human Services. National Institutes of Health. Eunice Kennedy Shriver National Institute of Child Health and Human Development","http://dx.doi.org/10.3886/ICPSR21942.v1","2004"
"22361","CCEERC","NICHD Study of Early Child Care and Youth Development: Phase IV, 2005-2008 [United States]","United States Department of Health and Human Services. National Institutes of Health. Eunice Kennedy Shriver National Institute of Child Health and Human Development","http://dx.doi.org/10.3886/ICPSR22361.v1","2008"