Alex Mill offers a glimpse into the next generation of classic American fashion

To get a glimpse of the future of American fashion, simply thumb through the most recent Alex Mill catalog. There, you’ll find a woman wearing a vintage denim work jacket with four patch pockets, coupled with cargo pants. Or a man wearing a waxed green canvas overcoat with a corduroy collar. The through line is that these are durable, high-quality garments pulled from the archives of classic American fashion, with the slightest hint of a modern twist: The pockets are slightly...