Very long dashes in Victorian-era book

You can superimpose two em-dashes:

\newcommand{\emmdash}{---\kern-0.5em---}

Full example:

\documentclass{article}

\newcommand{\emmdash}{---\kern-0.5em---}

\begin{document}

``He traveled by horse to W\emmdash”

-- --- \emmdash

\end{document}

You can use a Latex "rule" to create a thin rectangle.

\documentclass{article}
\begin{document}
He travelled by horse to W\rule[0.5ex]{3em}{0.5pt}
\end{document}

the format is \rule[raise]{width-x}{thickness-y} (source)and this can of course be used in a \newcommand for convenience.

By using "ex" and "em" units, the rule should scale nicely with the font.