Woodcut showing the Carrollton Viaduct showing "horse cars" on the track, originally appearing in the 1831 <i>Citizens' and Farmers' Almanac</i>, reprinted on the inside cover of the October 1921 <i>Baltimore and Ohio Magazine</i>.
Unknown author<span style="display: none;">Unknown author</span>
<a rel="nofollow" class="external text" href="https://archive.org/details/baltimoreohioemp09balt"><i>Baltimore and Ohio Magazine</i> (1921)</a> at the <a rel="nofollow" class="external text" href="https://archive.org/">Internet Archive</a>