I met another neighbor yesterday. Steve has the second cabin downstream. He has been here for a long time and has lots of information. Like: my cabin was built around 1967; he has an irrigation ditch that runs water from my property to his (it needs work); he says we each have 50% water rights; he says there have been robberies in the past (mostly ten years ago or so) where even large items (a stove, a desk, an ATV) were stolen from his and my cabins. He said he has no problem with the Forest Service passing through his property and improving the road. His cabin is large and was built in the 1990's. It has no electricity and the well is a hand pump on the porch. His property was a 320 acre homestead, but back in he 1990's they sold 160 acres to the Forest Service. He owns the property with his sister.  

I climbed Broke Off Mountain yesterday: up the northwest side and then down the west side near the middle of the ridge. I found no trace of the 1878 survey marker for the Petaca Land Grant, just a 1935 USGS brass cap at the highest point. Here is a photo of my property from up there (1,100 feet up):

This is the area just south of my property. It is known as Valle Grande.

There were a couple antelope up there. The top of Broke Off Mountain is mostly not treed with a slight slope.