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. Aging of Veterans of the Union Army: Military, Pension, and Medical Records, 1820-1940 (ICPSR 6837) Fogel, Robert W., et al. 2 more results in Civil War Veterans Series 2. Cleveland Study of the Elderly: a Follow-Up, 1984-1988 (ICPSR 6985) Ford, Amasa B. 3. RAND Health Insurance Experiment [in Metropolitan and Non-Metropolitan Areas of the United States], 1974-1982 (ICPSR 6439) Newhouse, Joseph P.