Robby Raccoon
Trash Digger
1850s farm house (A). 3/4 Cape Cod in style with a door on each wall; plank construction settler's cabin.
Original barn burned (E). Lots of stuff around it. Historically, it was a cattle farm with some crops on original 40 acres.
In my opinion, the most likely location of the privy is somewhere in B, quadrants 1, 3, 4, or 5. I think quadrant 2 is too close to the house. I think the original "driveway" was in K, so it cannot be out front.
Sadly, quadrants 1-4 in B are where the septic system should be (it's not on any existing maps) so it would be difficult to successfully dig if anything is left. B3 is where the cover is.
The wind blows from the house to the neighboring drive at right (Eastward) most of the year as indicated by arrows. In winter, it blows from the top left to the lower right as also indicated. Occasionally, it blows from lower left to upper right or due North. This is why I think the privy must be right of the house (A) and it must be a well in circle I. I assume you'd want the privy down-wind of the house and opposite the well, and that the wind hasn't changed directions in 160 years. An old orchard (C) may go back to early years, so it seems unlikely for the privy to be near it.
Would the well be worth digging? So far only some 1920s bottles have been found on the property. The swampy location at lower right only has boulders, not bottles.
Metal detecting hits a signal every few feet pretty much everywhere, so it hasn't been useful in locating the privy. Literally, the entire property seems to be nothing but signals and is full of iron and tin pieces. Ceramics can also be found even outside of the pic boundaries at surface level.
For those curious, the house looks like this and is undergoing renovation. Should look somewhat like final pic when done (blue and brown). I'm trying to find artifacts to display in the house.