For the past several years, mathematicians have contemplated a coordinated effort to digitize the past mathematical literature in order to make it available online. The aim is to make as much of the past literature available as possible, linked to the present literature in suitable ways.
The Committee on Electronic Information and Communication (CEIC) of the International Mathematical Union has made a commitment to coordinate further efforts to achieve a world-wide digital library. This site contains information about the World Digital Mathematics Library project and will be updated as the effort continues.
The CEIC organized a panel on the World Digital Mathematical Library at ICM 2014, August 20, 18:00-19:30. The panelists were Thierry Bouche, Ingrid Daubechies, Gert-Martin Greuel, Patrick Ion, Rajeeva Karandikar, and June Zhang, and the moderator was Peter Olver. A video of the panel discussion can be found here.
Recently, a report was published by the US National Research Council on Developing a 21st Century Global Library for Mathematics Research. A summary of its findings can be found here.
The CEIC organized the Symposium on The Future World Heritage Digital Mathematics Library, June 1-3, 2012, at the National Academy of Sciences. The meeting was supported by a grant from the Alfred P. Sloan Foundation. Participants, keynote talks, position statements, panel discussions, breakout sessions and more can all be found on the Conference Wiki.
A World Digital Mathematics Library blog, to provide an ongoing forum for discussions about and new developments in the WDML, has been inaugurated by CEIC in August, 2014.