1916 Map of Chehalis

Rail infrastructure is dominant, with lines such as the Great Northern Pacific Line and Chicago Milwaukee and St Paul navigating the terrain. Outside the larger towns, smaller settlements like Tono and Mendota appear alongside geographical features such as Chambers Prairie and Porcupine Ridge. Notable landmarks include a Fish Hatchery and the Indian Sam Trail, reflecting the diverse uses of the land before the mid-century expansion of modern highways.