Monorail subway from Capitol to Senate. Car
See also <a rel="nofollow" class="external free" href="https://www.loc.gov/pictures/item/2006683621/">https://www.loc.gov/pictures/item/2006683621/</a>
<a rel="nofollow" class="external text" href="http://hdl.loc.gov/loc.pnp/pp.hec">Harris &amp; Ewing, photographer</a>
<a rel="nofollow" class="external text" href="http://cdn.loc.gov/service/pnp/hec/06900/06927v.jpg">Library of Congress</a>