Related files and distributions:
CTAN:/tds)
specifies a directory tree for all TeX library files. The directory
names given in Suppliers and Typefaces are intended to mesh
with that standard.
modes.mf file (ftp://tug.org/tex/modes.mf)
contains recommended mode names to use as directory names.
CTAN:/fonts/psfonts) contains
TeX support for many fonts, both commercially available and free.
CTAN:/fonts/utilities/psfonts)
supports quite general creation of virtual fonts, named according to the
scheme given here.