4 entries match your criteria. Related Historical MarkersWilliam Mentor Graham By Bill Kirchner, October 3, 2014 Mentor Graham Marker SHOWN IN SOURCE-SPECIFIED ORDER1► Illinois (Menard County), Tallula — Mentor Graham — 1800 - 1886 — Teacher of Abraham Lincoln — On Illinois Route 97 0.1 miles south of Illinois Route 123. 2► Kentucky (Green County), Greensburg — 2441 — William Mentor Graham — 1800 - 1886 — On S. 2nd Street at W. Court Street, on the right when traveling south on S. 2nd Street. 3► Kentucky (Green County), Summersville — 719 — Lincoln's Mentor — On Hudgins Highway (State Highway 569) at Hodgenville Road (State Highway 61), on the right when traveling west on Hudgins Highway. 4► South Dakota (Hughes County), Blunt — Mentor Graham — On Pierre Street (198th Street) (U.S. 14) west of Commercial Street, on the left when traveling east.