Built specifically for Sioux City Iron Company, the building is now occupied by Hawkeye Building Supply Company. For a number of years in its early days of operations in Sioux City, the company was owned by H.A. Sadler, and later his son, Jack. Old photographs from that time period are now displayed in the office areas and depict shelves and shelves stocked full of iron bars and sheets of steel. Blacksmiths were the main customers in those days and gradually the inventory moved more into ag-related supplies. Today, the company's showroom and inventory handles a wide selection of ag-related materials, construction supplies, woodworking items and tools.
Inventory ranges from saws of various sizes to engine oil, shovels and bolts.
Much of the company's sales volume is now and also has been done through catalog sales. Longtime employees include Russ Hagerty who has worked for the company for 50 years, and Al Fisher who has worked there for 43 years.