The two "night"postcards are again daylight images made to look as though they were created at night. Note that in such images, every single window is well and equally lighted!
The upper image looks south on Broadway from about Third Avenue.
The postcard on the lower right looks north from Front Street (Main Avenue).
The postcard at the bottom of the page shows Broadway in the evening in the 1960's.

Fargo, North Dakota
Broadway at Night 2

