Displayed below is sampwisc.tex, a LaTeX demonstration of how to use the UW letterhead. To download it, click on sampwisc.tex.  To compile it, you will also need the file wiscmath.sty.

% Document type: LaTeX
%\documentstyle{letter}
%\documentstyle[wiscmath,times]{letter}
\documentstyle[wiscmath]{letter}
\address{
1600 Pennsylvania Ave.\\
Madison, Wisconsin 53704}

\name{Joe Student}
\title{}
\signature{Joe Q. Student}

\login{student@math.wisc.edu}

\telephone{(608)555-1212}

\pagestyle{plain} %For multipage letters with no headings

\begin{document}
\begin{letter}{Dr. Joe Professor \\
               Chair \\
               Mathematics Department \\
               Anywhere University \\
               1 North Pole Circle \\
               City, State 12345-6789}

\opening{Dear Dr. Professor,}

This is a copy of the University of Wisconsin letterhead, typeset in \LaTeX.
To use it you must have the following three files
\begin{itemize}
        \item wiscmath.sty
        \item sampwisc.tex (this sample letter)
\end{itemize}
The file {\bf letter.sty} is part of the standard \LaTeX~ distribution.
The file {\bf wiscmath.sty} puts in the University letterhead and
modifies the format slightly so that you can include your e-mail address.
{\bf sampwisc.tex} is a sample letter---in fact it was used to create this
letter.  Just edit it to change the appropriate inputs and then compile
and print it as follows:
\begin{itemize}
        \item latex sampwisc---this creates sampwisc.dvi
        \item dvips sampwisc---this converts the file to postscript format.
        It can then be printed on the laser printer.
\end{itemize}
\closing{Sincerely,}

\endletter
\end{letter}
\end{document}