In September 1995, I wrote a new package, cs-letterhead.sty to replace the old letterhead style for LaTeX2e users. It also has a 2.09 compatibility mode so that many old documents should continue to format correctly if just the package name is changed. There is a skeleton file ( skeleton.doc) which contains extensive commenting explaining the use of all the package's features, as well as an sample letter ( example.doc) in the following directory:
These files should adequately explain the use of this package. If you find missing or badly documented features, please post the details to cs.gripe so that I can look into correcting problems.