View of west side of <a href="https://en.wikipedia.org/wiki/Carrollton_Viaduct" class="extiw" title="w:Carrollton Viaduct">Carrollton Viaduct</a> in <a href="https://en.wikipedia.org/wiki/Baltimore,_Maryland" class="extiw" title="w:Baltimore, Maryland">Baltimore, Maryland</a>. Completed in 1829 by <a href="https://en.wikipedia.org/wiki/Baltimore_and_Ohio_Railroad" class="extiw" title="w:Baltimore and Ohio Railroad">Baltimore and Ohio Railroad</a>. Image cropped.
William Edmund Barrett, <a href="https://en.wikipedia.org/wiki/Historic_American_Engineering_Record" class="extiw" title="w:Historic American Engineering Record">Historic American Engineering Record</a>
1970
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