The third story was removed by the NPS. This was <a href="https://en.wikipedia.org/wiki/Storer_College" class="extiw" title="w:Storer College">w:Storer College</a>'s first building.
National Park Service
2015
<a rel="nofollow" class="external free" href="https://www.nps.gov/places/harpers-ferry-lockwood-house.htm">https://www.nps.gov/places/harpers-ferry-lockwood-house.htm</a>