Aerial map of the Bund, Hongkew and Yangtzsepoo (1948)
Feel the difference. Left side: maximum that you see on Tianditu (zoom level 7), right side: maximum zoom (zoom level 9).
New upload on the Internet Archive: tile 1C of the 1948 aerial map of Shanghai, extracted at the highest resolution from 天地图.
Other uploaded tiles:
1A: Northwestern part of the city (today’s Putuo District 普陀区).
1B: Chapei (Zhabei district 闸北区).
1C: Bund, Hongkew, Yangtszepoo (外滩, 黄浦区, 虹口区, 杨浦区, 陆家嘴， 浦东新区)
2B: French Concession (Luwan, Xuhui, Jing’an districts 卢湾区, 徐汇区, 静安区).
2C: Chinese City (南市区, 黄浦区, 卢湾区, 浦东新区).
...to be continued.