Map from a 1943 report, showing the density of Portland's non-white population, according to data from the 1940 U.S. census. The map focuses on Northwest Portland, and a little bit of Southwest Portland. The main area of the map is a triangle bounded by the Willamette River, W Burnside St. and what is now Forest Park. Portland's highest concentrations of Japanese American residents in this era were in the Old Town-Chinatown neighborhood (in inner Northwest, shown on this map) and in downtown Portland.