Trevor Blake’s Buckminister Fuller archive, synchronofile, is now the largest in the world. This is a private archive, though, for better or worse:
In March 2013, Joe Moore of the Buckminster Fuller Virtual Institute donated his collection of Fuller papers to the synchronofile. Combined with the papers already owned by Trevor Blake, the synchronofile is now measured in tons of literature by and about R. Buckminster Fuller. An archive is rightly measured for its content as much as its volume, but access to this amount of material is significant.
Full Story: synchronofile: How Much Does Your Archive Weigh?