Feb. 10, 1919 Farmers State Bank of Gladstone, in Gladstone, ND was founded by Adam Lefor, Thomas Lefor, and J. W. Brinton. (later to become Garrison State Bank). Dec., 1983 A trust department is added to GSB, and it becomes Garrison State Bank & Trust. Garrison State Bank and Trust offers: Loans, Checking, CDs and IRAs.