Ross MacDonald, an illustrator in Newtown, Conn., has been documenting the letters and artwork. He describes the outpouring of grief the town has received on &lt;a href=&quot;http://www.drawger.com/yup/index.php?article_id=13858&quot;&gt;his blog&lt;/a&gt; and also &lt;a href=&quot;http://letterstonewtown.tumblr.com/&quot;&gt;here&lt;/a&gt;.