Search Results Use the search box below to revise your search, or start a new search. Studies (2) Variables Publications Your query returned 2 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance 1. ABC News/Washington Post Reagan Shooting Poll, March 1981 (ICPSR 8013) ABC News; The Washington Post 2. Data Bank of Assassinations, 1948-1967 (ICPSR 5208) Feierabend, Ivo; Feierabend, Rosalind; Jagger, F.M.; et al.