\documentclass{ltjarticle}
\def\R#1{\par
  \leavevmode\fbox{#1}:
  \texttt{\expandafter\meaning\csname TU\string#1\endcsname.}
}
\begin{document}
\fboxsep0pt
\R\textexclamdown
\R\textcent
\R\textsterling
\R\textcurrency
\R\textyen
\R\textbrokenbar
\R\textsection
\R\textasciidieresis
\R\textcopyright
\R\textordfeminine
\R\guillemotleft
\R\textlnot
\R\textregistered
\R\textasciimacron
\R\textdegree
\R\textpm
\R\texttwosuperior
\R\textthreesuperior
\R\textasciiacute
\R\textmu
\R\textparagraph
\R\textperiodcentered
\R\textonesuperior
\R\textordmasculine
\R\guillemotright
\R\textonequarter
\R\textonehalf
\R\textthreequarters
\R\textquestiondown
\R\AE
\R\DH
\R\texttimes
\R\O
\R\TH
\R\ss
\R\ae
\R\dh
\R\textdiv
\R\o
\R\th
\R\DJ
\R\dj
\R\i
\R\IJ
\R\ij
\R\L
\R\l
\R\NG
\R\ng
\R\OE
\R\oe
\R\textflorin
\R\j
\R\textasciicircum
\R\textasciicaron
\R\textasciitilde
\R\textasciibreve
\R\textacutedbl
\R\textgravedbl
\R\texttildelow
\R\textbaht
\R\SS
\R\textcompwordmark
\R\textendash
\R\textemdash
\R\textbardbl
\R\textquoteleft
\R\textquoteright
\R\quotesinglbase
\R\textquotedblleft
\R\textquotedblright
\R\quotedblbase
\R\textdagger
\R\textdaggerdbl
\R\textbullet
\R\textellipsis
\R\textperthousand
\R\textpertenthousand
\R\guilsinglleft
\R\guilsinglright
\R\textreferencemark
\R\textinterrobang
\R\textfractionsolidus
\R\textlquill
\R\textrquill
\R\textasteriskcentered
\R\textdiscount
\R\textcolonmonetary
\R\textlira
\R\textnaira
\R\textwon
\R\textdong
\R\texteuro
\R\textpeso
\R\textcelsius
\R\textnumero
\R\textcircledP
\R\textrecipe
\R\textservicemark
\R\texttrademark
\R\textohm
\R\textmho
\R\textestimated
\R\textleftarrow
\R\textuparrow
\R\textrightarrow
\R\textdownarrow
\R\textminus
\R\textsurd
\R\textlangle
\R\textrangle
\R\textblank
\R\textvisiblespace
\R\textopenbullet
\R\textbigcircle
\R\textmusicalnote
\R\textmarried
\R\textdivorced
\R\textinterrobangdown
\`A
\end{document}
