\documentclass[11pt]{letter}
\address{27 Hudson Street,\\
         Athens,\\
         Wessex,\\
         A26 7YY.}
\signature{James Holmes}
\begin{document}
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\begin{letter}{Dr Albert Grovenor,\\
               `Appleblossom',\\
               Whittington Green,\\
               Hemlock.}
\opening{Dear Albert,}
Thank you very much for your letter of 30 June 1998 and the
enclosed specimen.  I carried out a full analysis---as you
requested---but the results were so extraordinary that I can
only give them to you in person.
\closing{Yours sincerely,}
\ps{PS: I will be away on holiday until the 22nd.}
\cc{Mrs Dickens \\ Prof.~Cooper}
\end{letter}
%
\end{document}

