Mar 22, 2015
Army Air Forces Target Japan No. 18 — Osaka, July 1942. From the Branner Library, Stanford University. Cited in Fedman, David and Cary Karacas. 2012. "A cartographic fade to black: mapping the destruction of urban Japan during World War II" Journal of Historical Geography 38(3):306-328 http://dx.doi.org/10.1016/j.jhg.2012.02.004
More details can be found in "Maps reveal how Japan’s cities were destroyed during World War II," which discusses some of the issues raised in Fedman and Karacas's paper.
