Boy, do these bring back memories - I can remember some things from the late 50s, when I would have been 5 or 6 - about 10 years after these photos were taken, but many of the signs such as you saw on the main street shops were still around in Detroit when I was a kid. So were the buildings, and, best of all, the people were around too, complete with their attitudes and opinions. No Woody Allens back then. All politically incorrect now. With Nov 11 right around the corner these photos, all taken during WWII and many during the American participation in that war, can't help but bring to mind the men who left these places to fight and never to return. Now you can see what they were fighting so hard to protect.
Not many cars in some of the city photos (the photo of Detroit comes to mind) because there was gas rationing and rubber rationing during WWII, so a lot of people car pooled or rode the train or trolley (my mother did). The railroad boxcars were 40 ft long and of wooden construction. Lots of cities in America at that time had cable cars, just like San Francisco - we called them trolleys or street railways, though. Sometimes they were called the Interurban, too.
People and places, and a country, fondly remembered and greatly missed.