Thanks for the feedback, @
j44ke. I pulled it out from the wall to look at the signatures again, and the best I can tell is that one is a name and the other might be an address. Looking around the internet, it sounds like apprentices often signed their work when they first struck out on their own and didn't yet have labels or stamps.
I pulled out the drawer looking for markings (no luck), and noticed the joinery.
https://i.imgur.com/KAbUlft.jpg
https://i.imgur.com/N6wiSNs.jpg
The top is joined to the sides similarly.
I'm a bit surprised that the hand cut dovetails may indicate that it's pre-1860. Not much in Minnesota is pre-1860.
From some quick reading, it sounds like the pine body points to American manufacture, rather than English or European.