Though it is said that the National Diet Library Act was drawn up based on the original plan by the U.S. library mission, this preamble is believed to have been inserted by Goro HANI, a historian and a Diet member (who was then the chairman of the Steering Committee of the Library of the House of Councilors).
国立国会図書館法はアメリカ図書館使節団の原案をもとに起草されたと言われているが、この前文は歴史家で国会議員の羽仁五郎（当時の参議院図書館運営委員長）が挿入したとされる。