Original Old Rock Courthouse Cornerstone. Erected in Benjamin in 1891, when the officials of Knox County were: J.J. Truscott - judge; W.H. Benedict, T.P. Reeder, J.A. Spinks, G.B. Stewart, commissioners; T.D. Isbell - sheriff. Rock structure, replacing wooden courthouse of 1886, was in use until 1935. (1967) Incise in base: Presented by M. J. Spinks, Dallas #3871