Abraham Lincoln worked as circuit lawyer in Illinois. The map above shows the optimal route using flight distances through Lincoln's stops in the Eighth Judicial Circuit in Illinois of 1850, see also TSP | Graphics | Lincoln. Markers contain two links. The first link initiates a search of Lincoln Log for a mention of the marker's location, while the second link searches for images of the given location. Lincoln Log is a daily chronology of the life of Abraham Lincoln maintained by the Illinois Historic Preservation Agency.