The Olive Branch Cemetery is located on the north side of a gravel road one mile west of the former village of Mills, Nebraska in Keya Paha County.
GPS Reading
Latitude 42 degrees and 56.431 minutes north
Longitude 99 degrees and 27.816 minutes west
There is an extensive list of the burials at the following web address.
http://ftp.rootsweb.ancestry.com/pub/usgenweb/ne/keyapaha/cemeteries/olive.txt
Someone in the historical room in the former general store in the village of Mills may have additional information.