\documentstyle[palatino,fullpage]{letter}
\address{%
11B Valentine Street \\
Cambridge, MA 02139 \\
+1 617 354 6428 \\
{\tt marc@MIT.EDU}}

\signature{%
Marc Horowitz}

\begin{document}
\begin{letter}{%
Ann Daughaday \\
City Engineer \\
147 Hampshire Street \\
Cambridge, MA 02139}

\opening{Dear Ms. Daughaday:}

I am writing to you as the owner of 11B Valentine Street, to request
that the number of this building be changed.  

11B Valentine Street is a standalone residential building which is
part of a small condominium association in Cambridgeport.  The
building is in the rear of the property, behind 11 and 13 Valentine
Street, which are the other properties in the association.

The current number is the subject of a great deal of confusion.  Many
people who might send or deliver me letters or packages, or provide
on-site services, are easily confused by the distinction between the
two apartments in number 11, and the separate building which is 11B.
In addition, it is not uncommon for ``11B Valentine Street'' to be
misread as ``118 Valentine Street'', which does not exist.

In order to alleviate this confusion, I would like to change the
address of my property to ``9 Valentine Street''.  Currently, my
property is the southeasternmost on my side of the street, so there is
no property numbered less than 11 to conflict with this.  The adjacent
building at the corner of Valentine Street and Brookline Street is
currently being developed into condominiums whose addresses will be on
Brookline Street, so there will never be any properties to conflict.

If you have any questions, please feel free to call or email me.

Thank you for your consideration.

\closing{Sincerely,}
\encl{Plot plan, No. 11, 11B and 13 Valentine Street Condominium}
\end{letter}
\end{document}
