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: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Mapping Congress: Roll Call Votes of the Congress of the Confederate States of America, 1862-1865 (ICPSR 36109) Winling, LaDale; Vaughan, Matthew 2. Roll Call Voting Records for the Confederate Congresses, 1862-1865 (ICPSR 67) Alexander, Thomas B.; Beringer, Richard E.