Thanks for pointing this out. I toggled some Obsidian Publish settings and scrolling has improved; still not perfect, page doesn't scroll if your pointer is in the the TOC column.
When the building was built in early 1880s Harrison was a major railroad line. The front of the building, as far as I can tell from contemporaneous surveys, was occupied by a small grocery with a shopkeeper's apartment in the back.
Another is that the roof was used to channel rainwater into a single downspout that could be easily captured.
Either way, it is unusual. Butterflies didn't really emerge in the US until the mid-century modern movement in Southern California and then they were mostly style.