I am resurrecting this old thread to pass along a little info that you can think about.
If you read in my post above, the ruins in the woods along Sandy Causeway was the home of Michael J. Miloshevsky. This was true in 1935 when the State Geological Survey passed through installing geodetic monuments on Sandy Causeway. The buildings at the time was apparently owned by L.S. Berzihski which is shown on the survey I have. Jessica and I visited the ruins on Sunday while looking for property corners, and tonight I did a little searching and here are a few things I came up with.
If you read the post right above this one from "Neil in SJ" he mentions there is a shard of stoneware with lettering that would make him believe it possibly was a dairy. So with that in mind lets move on. I searched the 1940 census for Michael J. Miloshevsky and found what might have been him living in Medford on Union Ave with his wife and two children. In 1940 he was 23 which would have made him 18 in 1935 when the Geodetic Survey passed through Sandy Causeway. His son Michael Jr. was 1 year old so he was born in 1939.
However, in the 1940 census it says Michael Sr. was living in the "Same Place' in 1935 with "Same Place" meaning the same town(Medford) but not the same house. This would you would think put him in Medford in 1935 and not Sandy Causeway. In any event, his occupation was a dairy hand at a dairy farm making it seem like Neil in SJ may be correct. The property on Sandy Causeway may have been a dairy farm with Michael living there at least part time or during the day running the place.
So looking a little further I found this obituary for what I believe to be the son who was 1 year old in 1939. When he died in 2002 he was 63 making his birthday 1939. It fits.
https://www.legacy.com/obituaries/CourierPostOnline/obituary.aspx?page=lifestory&pid=130709561
Without further research there is no direct proof of this but it certainly is something to start with.
1940 Census
There are multiple ruins there.
This is the small square foundation Neil in NJ mentioned. I was thinking this may have held water.
Guy