I think you'll have better success finding descendants by following up on the descendants in the Raines, Halley, Holley, et. al. Family Tree.
For example Elvira Ballentine Ryan died Dec. 10, 1988 in Jordan, Garfield Co., MT.
You can request a copy of her obituary from the Garfield County Library, 406-557-2297 or Drawer 69, Jordan, MT 59337-0069.
After I receive the obituary, I look for survivors. Then I use zabasearch.com or spokeo.com to look up current contact info.
If you need help with where to find obituaries, contact me. Successful Searching & Happy Holidays!