Same for me, growing up in San Francisco in the 1950s. Passed by a broom factory two blocks from my house on the way to school each morning, big doors wide open and lots of machines and people. Don't know if brooms are made in the USA any more. Lots of factories making stuff, bottling plants, machine shops, slaughter houses, etc., and railway tracks where train cars would deliver stuff and cart stuff off. All gone now, and all the railway tracks ripped out or buried under asphalt. People sell stuff but they aren't manufacturing it.
Those railway tracks now go right to the Port where the container ships full of foreign-manufactured goods await. :/