Search Results Use the search box below to revise your search, or start a new search. Studies (4) Variables Publications Your query returned 4 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. Union Army Recruits in Black Regiments in the United States, 1862-1865 (ICPSR 9426) Metzer, Jacob; Margo, Robert A. 2. Union Army Recruits in Black Regiments in the United States, 1862-1865: [Instructional Materials] (ICPSR 3466) Oberly, James W. 3. Union Army Slave Appraisal Records from Mississippi, 1863-1865 (ICPSR 9427) Margo, Robert A. 4. United States Census of Mortality: 1850, 1860, and 1870 (ICPSR 2526) Fogel, Robert W.; Ferrie, Joseph; Costa, Dora; et al.