\documentstyle{letter}
\begin{document}
\address{3 Ames St. \\ Cambridge, MA 02139}
\signature{Kevin Iga\\ Applicant}

\begin{letter}

\opening{Dear Sirs:}

This is to inform you that the letters of recommendation will be mailed
separately from the various professors.  There were some difficulties in
tracking down the particular professors I wished to get recommendations
from, so there may be some delay before you receive the letters.  I
am sorry for any incovenience this may cause you.

\closing{Sincerely,}

\end{letter}
\end{document}
