Institutions contributing to the WDL include national libraries, and cultural and educational institutions in Brazil, Egypt, China, France, Iraq, Israel, Japan, Mali, Mexico, Morocco, the Netherlands, Qatar, the Russian Federation, Saudi Arabia, Serbia, Slovakia, South Africa, Sweden, Uganda, the United Kingdom and the United States.

UNESCO: Communication and Information

The Convention concerning the International Exchange encourages and facilitates the exchange of publications between both governmental bodies and non-governmental institutions of an educational, scientific and technical, or cultural nature, which are non-profit-making in character.

UNESCO: UK National Commission for UNESCO - UNESCO Conventions, Recommendations & Declarations in the UK