Here's a little gift: the Shanghai Street Directory 上海市行号路图录/上海市行號路圖錄 (1947), including 118 detailed street maps of the former French Concession 法租界 and the Chinese City 南市. Published by the Free Trading Co. Ltd. 福利营业公司.
I recommend downloading the PDF, because I added a clickable city map (p. 91) and bookmarks for navigation, which are hidden in the online view.
The detailed maps from this atlas correspond to the stitched maps of the French Concession and Walled City, dated 1946, on the Virtual Shanghai GIS platform. The International Settlement is in a separate volume of the atlas, and I presently don't have it.
My other uploads at archive.org.
Top image: The Type.