Study Search Results Your query returned 3 results. Series results are grouped under the most relevant study. You can ungroup series results. Use the search box below to revise your search, or start a new search. 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. Census Tract Data, 1940: Elizabeth Mullen Bogue File (ICPSR 2930) Bogue, Donald 2 more results in Census Tract Data, 1940, 1950, 1960, and 1970: Elizabeth Mullen Bogue Files Series 2. Project on Human Development in Chicago Neighborhoods (PHDCN): Addendum (Primary Caregiver), Wave 3, 2000-2002 (ICPSR 13670) Earls, Felton J.; Brooks-Gunn, Jeanne; Raudenbush, Stephen W.; et al. 4 more results in Project on Human Development in Chicago Neighborhoods (PHDCN) Series 3. Urban Poverty and Family Life Survey of Chicago, 1987 (ICPSR 6258) Wilson, William Julius, et al.