Lost 40 Minnesota: How This Pristine Forest Was Saved by a Mapping

Thanks to a 19th-century surveying error, hundreds of acres of Minnesota’s old growth forest has been saved in pristine form.
Thanks to a 19th-century surveying error, the Lost 40 in Minnesota, an old growth forest, has been saved in pristine form.

Chippewa National Forest - Lost 40

Lost forty - General Discussion Forum - General Discussion Forum

The Lost Forty of Minnesota

The Lost 40 – Northome, Minnesota - Atlas Obscura

408-year-old tree discovered in Algonquin Park's unprotected

2W1C S03E79: The Lost 40

Accumulation - Anne McClintock - Ghost Forest: Atlas of a Drowning

List of old-growth forests - Wikipedia

There's No Forest In The World Like The Lost 40 In Minnesota