A: Brussel, Brussels Hoofdstedelijk Gewest, Belgium
In 1925 Robert B. Goldschmidt and Paul Otlet published La Conservation et la diffusion internationale de la pensée, le livre microphotique as publication no. 144 of the Institut international de bibliographie (Brussels). This work described their plans for a massive library where each volume existed as master negatives and positives on microform, and where items were printed on demand for interested patrons.