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. Most Downloaded (?) Study Title/Investigator 1. CMS Medicaid Analytic Extract (MaxFile) Medicaid Claims Data: 100 Percent of Claims for 14 Southern States, 2004-2007 (ICPSR 34353) Rust, George 2. Union Army Recruits in Black Regiments in the United States, 1862-1865 (ICPSR 9426) Metzer, Jacob; Margo, Robert A. 3. Union Army Recruits in Black Regiments in the United States, 1862-1865: [Instructional Materials] (ICPSR 3466) Oberly, James W.