Search Results Use the search box below to revise your search, or start a new search. Studies (3) 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: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance 1. Woman and Child Wage Earners: Married Women, 1907 [Massachusetts, North Carolina, Chicago, New York City, and Philadelphia] (ICPSR 20720) Goldin, Claudia 1 more result in Woman and Child Wage Earners Series 2. Birthweight Data From the Philadelphia Almshouse Hospital, 1848-1873 (ICPSR 20701) Goldin, Claudia; Margo, Robert A.