Some of them contain lots of old highway scenes in Missouri & include footage of the "Flood of 1951", planning, road construction, safety & travelogue films.
Missouri Department of Transportation (MoDOT) Films (https://www.youtube.com/watch?v=YR0w8Aa4QP8&list=PLfp960XPI8Z3bVzILVyjdQqaIXMwbwGm9&pp=iAQB)