I still need to track down “authorities” to verify, but this appears to be a real handwritten letter or speech written by a Robert Greuzbauer, a Texas surveyor about the VARA and Chain standards for measuring land. It gives a very clear description of the Vara standard and how it relates, or doesn’t relate to the Chains used elsewhere and since. The document came next to a newspaper article with election results dated 1845– so that’s awesome. There’s a scan of the whole document from the sale listing, and a typed version here if you are interested to see why we are so interested.
Now we can use and share without concern for copyrights. This makes a great math/history artifact and topic. I hope some Texas teachers will be interested!