Search Results Use the search box below to revise your search, or start a new search. Studies (3) Variables Publications Your query returned 3 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. ANES 1968 Time Series Study (ICPSR 7281) University of Michigan. Survey Research Center. Political Behavior Program 2. Southern Primary and General Election Data, 1920-1949 (ICPSR 71) Heard, Alexander; Strong, Donald S. 3. White Attitudes Toward Black Civil Equality in the Nineteenth Century: Iowa's Equal Rights Referenda of 1857, 1868, and 1880 (ICPSR 4284) Dykstra, Robert R.