This webpage is a placeholder for a set of webpages to be imported someday that describe an old project of mine. That project was to make accessible to the world several of the early social global models developed in the period 1970 to the mid-1980s. I converted (and fixed bugs in) the models so that they could be run on personal computers of 1990s-2000s vintage. The materials that will be on the webpages are the models themselves, but more importantly, the (almost exclusively Fortran-77) source code, the datafiles, subroutine linking files, and what documentation I could assemble.