The company subsequently acquired US General Supply Company in 1991. Based in Plainview, New York, US General Supply Company was another mail-order tool and equipment seller, which at one time had 40 retail stores before they were closed following bankruptcy. Vestiges of the old US General can be seen with the branding of the toolboxes that Harbor Freight Tools sells. At first, the company mailed promotions in standard #10 business envelopes. In the early 1980s, when company relocated to Camarillo, it acquired the former headquarters of Unity, another large mail-order company, and launched its first mail-order catalog in the mid-1980s.