And the "baby boom" came in 1935 - 1963?
I loved those places back in the 50s, when car windows were steamed-up, you could smell the fresh-made popcorn and hot dogs, see some cars 'bouncing around', folks would bring lawn chairs and have a 'tailgate' party with the whole family, others would being their little Scotch Grille cookers and make their own eats, and coolers full of beer were the norm.
The old Stoney Brook Drive-In, built in the early 50s here in East York (PA), was bulldozed last year to make way for a 100ac housing tract. It had been closed since the early 80s, and the farmer-owner had been sitting on it until he got his price. It was one of the last pieces of Americana in the region.
bump