You must have Version 3.0 or later, or you will not be able to read the files . These plats are in . These may be downloaded by right-clicking on the desired file, then saving, depending on how your browser is set up.
Some surveys have more than one plat.
They are in .pdf format. These surveys will be listed in each township that they contain data, but will be under the same filename as the township and range in which most of the work took place.