If you're building out an older HO layout, there's a good chance you've come across Magnuson Models kits for sale. These are the kinds of structures that show up in industrial areas, with brickwork and details that feel a little more realistic than standard plastic kits.
A lot of the designs ended up getting reissued later on, but the original runs still get attention from builders and collectors who want that classic look. You can find more in model trains when putting together a full scene.
