When the Historian's office was established, a number of former Bank staff contributed documents or reminiscences to the office. This series includes the incoming correspondence and the enclosed papers, reports and manuscripts, some written by the sender and others written by colleagues of the sender. The items cover various topics, including: early Bank operations (William Katzenstein's Budgeting in the World Bank, 1947-1956); language training; and the Young Professionals program.

Items within this series may also be found among the records of the Bank, but these copies were regarded by their authors or possessors as so significant that the Historian's office needed to be made aware of them.