In 1911, what is now Pondera County, was still part of Teton County. The 1911 Directory of Teton County has a listing for Brady and Rural Brady. The rural section describes locations of homesteads.
Here are the pages for Brady. The entire directory is available at the Conrad Public Library and online at the Montana Memory Project. mtmemory.org/digital/collection/p16013coll116/id/340/rec/1