The recognition that disturbance played a key role in determining past vegetation compositions, structures, and patterns has spurred efforts to map fire regimes for ecosystem restoration. The need for higher resolution maps for land management has led to an increasingly sophisticated array of maps combining soils, topography, human history, remnant vegetation, landscape concepts, and local knowledge. Forest Service scientists classified tree species by fire relations (pyrophilic, or fire loving; and pyrophobic, or not fire loving) and applied the classification to witness trees listed in deeds and other forms of early land surveys. From this classification, the scientists calculated a pyrophilic percentage spatially extrapolated these percentages to form a continuous surface across large landscapes. This technique was applied to witness trees on the Monongahela National Forest in West Virginia, resulting in a set of maps that can be used by the forest to help in returning fire as a disturbance regime. Similar maps were created for the Allegheny, Finger Lakes, Green Mountain, and White Mountain national forests and, at a different scale, for the New England region. These spatial models can be used by fire planners and ecologists as aides to determining where to return fire on the landscape or site scale.