This is a 2-stage multi with Stage 1 at the posted coordinates. Located there is a historical marker about an event that happened in Hamilton. Use the information on that marker and the clues listed below to find the values of A, B, C, X, Y, and Z.
The final stage, Stage 2, is located at N 39° 23.ABC, W 084° 33.XYZ.
Saturday, September 1B, 1859
to about 1C00 people at South Fourth
(about X85 feet south of here)
He spoke Z in Columbus.
At Y feet four inches,
won the Republican presidential nomimation A months later
Bring your own pen and geotools.