found: Schafer, R. Equal credit opportunity, 1980 (a.e.):title page (Helen F. Ladd, Joint Center for Urban Studies of Massachusetts Institute of Technology and Harvard University)
found: Her The fiscal health of U.S. central cities, c1989title page (Helen F. Ladd) data sheet (b. 1945)
found: Her Measuring the fiscal condition ... 1991title page (Helen L. Ladd [incorrect spelling]; Duke Univ.)
found: Handbook of research in education finance and policy, 2015page 4 of cover (Helen F. Ladd is the Susan B. King Professor of Public Policy Studies and Professor of Economics at the Sanford School of Public Policy at Duke University)
