"study number","owner","title","investigators","doi","time period"
"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"