I have a copy of a Federal Land Grant to my gr, gr, gr grandfather, John Spring.Would like to know the exact location of this property if at all possible.Document #4040, Assession/Serial #OH0420_.065, BLM Serial #OH NO S/N, Aliquot parts- w1/2 of the SE quarter. Sec/block 11. Township 6-N. Range 2-W. Fract. section - NO.This was in the United States Military Territory.Any one who could help with that or tell who to contact would be greatly appreciated.