Search Results Use the search box below to revise your search, or start a new search. Studies (6) 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. Census Tract Data, 1940: Elizabeth Mullen Bogue File (ICPSR 2930) Bogue, Donald 3 more results in Census Tract Data, 1940, 1950, 1960, and 1970: Elizabeth Mullen Bogue Files Series 2. Ohio Statewide Household Travel Survey, 2001-2003 (ICPSR 34912) Casas, Jesse 3. RAND Health Insurance Experiment [in Metropolitan and Non-Metropolitan Areas of the United States], 1974-1982 (ICPSR 6439) Newhouse, Joseph P.