This series contains subject files created and maintained during Frank's career in the World Bank Group. Most of the files come from the period during which Frank was a managing director of the Bank, 1995 to 1997. The series also includes records assembled while Frank served in his various capacities at the International Finance Corporation (IFC), 1979 to 1995, including his work with the Planning, Budget, and Analysis Department (PBA), and as IFC Vice President, Finance and Planning (CFPVP). One file contains a photocopy of a thesis originally published in 1965.

File date ranges indicate when the original materials were created, not necessarily the dates of duplication or use. In many cases, particularly while serving as managing director, Frank retained or acquired older documents for reference on a subject.

File titles reflect original groupings of records. Liaison files relate to Frank's work as chairman of the Private Sector Development (PSD) Group to foster cooperation across the World Bank Group on PSD issues. Files labeled "significant issues" contain records about specific topics central to Frank's work. Many individual "informational files" contain materials on multiple unrelated topics.

Subject file topics include: private sector development (PSD); the Multilateral Guarantee Investment Agency (MIGA); IFC market borrowing; guarantees; individual corporations such as Corporacion Financiera del Valle, Enron, Freeport, and the Institute of International Finance; multilateral development banks; the Bank Group's Strategic Compact; and various conferences and meetings that Frank attended. Materials include memoranda, internal and external correspondence, minutes, notes, discussion papers, draft and final reports, and presentation documents.