The Biographical series contains biographical sketches, clippings, awards, correspondence between Kemmerer and family members, especially his son Donald Kemmerer, and photographs. The series also includes a guestbook listing the visitors to the Kemmerer home from 1920 to 1941 and a small amount of material related to Princeton University and Scranton-Keystone Junior College.

The Country Files series documents Kemmerer's financial advisory work and also contains materials collected by Kemmerer as he conducted research on particular countries. The series contains material from twenty-six countries, mostly in Latin America. The best documented are China, Colombia, and Peru, and to a lesser extent Chile, Ecuador, the Philippines, and Poland. The papers include correspondence, reports, clippings, and government publications regarding a wide variety of subjects, including banks and banking systems, currency and monetary policy, government budgets and debt, taxes, trade laws, and information regarding the economic and social conditions of the countries. The papers also include correspondence, reports, clippings, and other materials of the commissions of financial advisors lead by Kemmerer.

Series 6 is largely composed of materials related to Kemmerer's work as a financial advisor leading international financial commissions. The materials include bound copies of reports submitted to the governments with the commissions' recommendations and photograph albums and scrapbooks of clippings that document the time spent by the commissions in the countries, as well as a small number of books. Supplemantary materials that were kept in rolls may be found in Series 7.

This series includes the Bradley Senate office's administrative records. Most records in this group were created by Marcia Aronoff, Marina Gentilini, and Margaret Hawthorne, and consist of schedules, invoices and receipts, and routine correspondence.