You’re correct it’s a typewriter table. The 28 inch height is called clerical height, which is 2 inches lower than desk height, which is 30 inches. The drawer is to hold typing paper, carbon paper and second sheets because copy machines have not been invented you always need a copy of whatever you typed for your own personal records. those tables were usually made out of red oak, which was adorable and not expensive. Pittsburgh Office Equipment, as I remember, was located on Carson St. in Pittsburgh.