There was an August and Albert Anderson awarded citizenship in the district court held in Blackfoot Nov. 9, 1899 as noted in the Idaho Falls Time newspaper on page 8.

Twin Falls News
Jan. 10, 1919
page 5

Card of Thanks
We wish to thank our friends and his neighbors, who so kindly rendered their assistance during the illness of our son, ALL. Anderson. Also for the beautiful floral offerings.
Mr. and Mrs. Albert Anderson.

I don't know if these two articles are about your ancestors, but I thought I would post them.
Eellitta