Its great seeing these long abandoned grand buildings come back to life. And its even better that developers are lining up to restore them.
pwright this may not get you back to 1950s Detroit but its close...
A good yet somewhat depressing film of Detroit in the 1960s, interesting to note how optimistic they were of the years ahead.
Detroit on the Move - 1965
http://ia300142.us.archive.org/2/items/DetroitC1965/