The concept for the WDL came from a speech that Billington delivered to the newly established U.S. National Commission for UNESCO on June 6, 2005, at Georgetown University.
In his speech, Billington proposed that public research institutions and libraries work with private funders to begin digitizing significant primary materials of different cultures from institutions across the globe. Billington said that the World Digital Library would bring together online "rare and unique cultural materials held in U.S. and Western repositories with those of other great cultures such as those that lie beyond Europe and involve more than 1 billion people: Chinese East Asia, Indian South Asia and the worlds of Islam stretching from Indonesia through Central and West Asia to Africa."
Google Inc. has donated $3 million as the first partner in this public-private initiative.