U.S. Senate, editor, Senate Documents Vol. 8, 56th Congress 1st Session, 1899-1900 (Washington, D.C.: U.S. Government, n.d.), 8: Doc. 68, pp 19-23.
Schedule of improvements on land occupied by the Tanner and Foutz families in the Tuba City, Arizona area, 30 May 1899. This includes the property of Fred Tanner, John Tanner, Joseph Tanner, Emma Tanner, Seth Tanner, and Joseph Lehi Foutz. This information was recorded as part of “a Bill establishing the boundaries of an addition to the Navajo Indian Reservation, Arizona, and making appropriation for purchasing the improvements of settlers within the addition.”
On Granny's Trail 
Never knew why the Tanners came off that area till I saw this. Thanks.
Yes, it’s interesting to discover the story behind the move. The documents are fascinating and really give a glimpse into life there at that time.
I wonder if H.W. Despain came straight to the Concho area from there?
Could be. It would be interesting to find some early evidence of his arrival in newspapers or land records.