Study Search Results Your query returned 3 results. Series results are grouped under the most relevant study. You can ungroup series results. Results per page: 25 50 100 Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. (?) Study Title/Investigator 1. Confederate Amnesty Records for the United States Civil War, 1863-1866 (ICPSR 9429) Steckel, Richard H. 2. Indiana Voter: Nineteenth Century Rural Bases of Partisanship, 1870 (ICPSR 30) Hammarberg, Melvyn A. 3. United States Census of Mortality: 1850, 1860, and 1870 (ICPSR 2526) Fogel, Robert W.; Ferrie, Joseph; Costa, Dora; et al.