template.tex

\documentclass[10pt]{article}

\usepackage{illinois-letterhead}

% header
\fromdept{THE GRAINGER COLLEGE OF ENGINEERING}
\fromdeptaddress{Department of Computer Science\\Siebel Center for Computer Science\\201 North Goodwin Avenue\\Urbana, IL 61801--2302 USA\\}

% footer
\fromtel{217.244.5555}
\fromemail{\href{mailto:netid@illinois.edu}{netid@illinois.edu}}
\fromweb{\href{http://netid.cs.illinois.edu}{netid.cs.illinois.edu}}

% closing address
\closing{Sincerely}
\signaturefile{sig.png}
\fromname{Dr.\ Such and Such\\Professor}

\begin{document}
% set a font family
% \fontfamily{Montserrat-LF}\selectfont
% \fontfamily{qcr}\selectfont
% \fontfamily{lmr}\selectfont

\today
\bigskip

Dear Such and Such,
\bigskip

\end{document}