\documentstyle{letter}

\begin{document}

\address {Professor\ Geoffrey C Fox \\
Northeast Parallel Architectures Center \\
111 College Place \\
Syracuse University \\
Syracuse, NY 13244-4100 \\
Phone: (315) 443-2163 \\
FAX  : (315) 443-1973 \\
email: gcf@npac.syr.edu
}

\begin{letter}

\opening{Dear Sir,}

This is to certify that {\bf Saleh Elmohamed} is currently working on
his {\em PhD Dissertation} under my supervision as well as employed by
us, the Northeast Parallel Architectures Center (NPAC).


\closing{Yours sincerely,}

\end{letter}

\end{document}



