fancyheadings.sty which you can find at the
CTAN sites: ftp.shsu.edu (U.S.), ftp.tex.ac.uk (U.K.), and
ftp.dante.de (Germany).
You will find it in the directory
/tex-archive/macros/latex209/contrib/fancyheadings. Although
fancyheadings
is a 2.09 style file, it will work with LATEX2e. Also this
article and the two packages fixmarks and extramarks can
be found there. (The code for these packages given in this article is a
simplified version.)