"The Public Buildings" (Philadelphia City Hall).
The North American (Philadelphia newspaper)<br>John McArthur, Jr., architect
<i>Philadelphia and Popular Philadelphians</i> (Philadelphia: The North American, 1891), p. 6.<a rel="nofollow" class="external autonumber" href="https://archive.org/stream/philadelphiapopu00phil/philadelphiapopu00phil#page/6/mode/1up">[1]</a>