\documentclass[10pt,a4paper,twoside,onecolumn]{letter}

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\begin{document}
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\begin{letter}
\address{%
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Hans Thomas {\scshape Reiser} \hfill ({\scshape cdcr} {\ttfamily\textnumero\ {\scshape g}31008}) \\
California Health Care Facility ({\scshape chcf}) &\\
\CO\ Dept. of Corrections \& Rehabilitation &\\
{\scshape usps PO} Box \textnumero 213040 &\\
Stockton, {\scshape ca} 95213+9040 &\\
United States of America &\\
}
}
\returnaddress{%
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{
\begin{tabular}{ll}
{\scriptsize {\itshape Be this letter undeliverable, return to}} &\\
Fredrick R. {\scshape Brennan} &\\
Modular Font Editor {\scshape k} ({\scshape mfek}) Fndn. &\\
\textnumero597\textsuperscript{\underline{A}} N. Raleigh Ave. &\\
Atlantic City, {\scshape nj} 08401+1081 &\\
United States of America &\\
\hline
    \begin{tabular}{ll}
        Telephone N{\textsuperscript{\underline{os}}}: & (818) 824-1764 ({\scshape sms} preferred)\\
                                                  & (609) 674-3889 (Google Voice, {\scshape sms} only)\\
    \end{tabular}&\\
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}
}
}

\opening{Dear Mr. {\scshape Reiser},}


    Thank you very much for your thoughtful and long reply to my query. I published it to the best of my ability online. Although I emailed it to the LKML (Linux Kernel Mailing List), it received no replies there. However, many pages and pages of replies were received on Reddit's {\ttfamily r/linux} subreddit and on the website Hacker News\footnote{
        Which, for all intents and purposes, has for the most part replaced Slashdot as the go-to place for Linux news and discussion.
    }.

    I am very grateful for your time and effort in replying to me. I am also very grateful for the time and effort you put into the development of the ReiserFS filesystem. I am very sorry for the circumstances that led to your incarceration. I hope that you are able to find some peace and happiness in your life, and that you are able to continue to contribute to the world in a positive way.

    I have attached a copy of the letter I sent to the LKML, so you can see how I formatted your letter. I have attached as well a copy of the replies I received on Reddit and Hacker News. I hope you find them interesting.

    I have also made an attempt to attach information related to Reiser v5, but there is not much information about it online.

    If there is some way I can help next time your case comes up for parole, please let me know. I would be happy to write a letter of support for you, or to help in any other way I can.

\closing{Sincerely,
\vspace{3em}
\signature{Fredrick R. {\scshape Brennan}}
}

\end{letter}
\end{document}

