We find effigies of Lincoln in many public parks and government buildings.
It's a three-dimensional likeness, such as a statue or a voodoo doll. Some are complimentary and some are not. The best known useage is "We burned the bum in effigy," which describes the common practice of making a mock dummy of some despised person and burning it in front of an angry mob - hanging or otherwise (the effigy, that is.)