Maps of natural tree regeneration recorded in 1913-1914, after Yacolt and related burns in southwest Washington

This package includes 39 scanned maps documenting natural regeneration of tree species in 1913 and 1914 after fire, for eight areas (two of which overlap) within southwestern Washington. These areas are within the Rainier or Columbia National Forests and include: 1) Highline Trail; 2) Johnson Creek Trail and Cispus River; 3) Killen Creek Trail, Johnson Creek Trail, and Spring Creek; 4) Klickitat Trail; 5) Last Point; 6) Lookout Mountain North, Spring Creek, and Little Lookout; 7) Lookout Mountain; and 8) McCoy Creek Trail. The data provided on these maps were collected by the Wind River Experiment Station, District 6 (a precursor to the current USDA Forest Service, Pacific Northwest Research Station). Each map documents the number of seedings for an individual coniferous species in 1-acre cells along transects shown on base maps which include township and range information and the locations of streams, trails, and contour lines. The base maps delineate the boundaries of the “green timber” (unburned areas) and in some cases also the location of individual older live trees by species and age (greater than or less than 100 years old) within the general burned area. Within each 1-acre cell, regeneration is shown in 3 age classes (≤ 5 years, 6-10 years and > 10 years). The transect cells are generally marked to indicate the number of groups of 100 or 500 seedlings per species and age class per acre, which varies for each area, and is denoted on each map's legend. Minimal burn information for each area is provided and include the following cases: “On the Yacolt Burn of 1902” (for two areas near Lookout Mountain), “Burned 1910” (for Johnson Creek), and “a burned area” (for five areas, but no specific information as to the date of the fire is provided).
The original purpose for the maps was not documented, but based on the type of data collected it is likely the purpose was to document the amount and type of natural regeneration after fire in relation to distance from unburned areas, as well as aspect, slope and other geographic metrics.