Trademarks of the four major mid-century "discount marts". I use this term because, in those days, "mart" was the retail industry buzz word. Nowadays, the otherwise antiquated and obsolete term is still in use; but only because of the existence of the WalMART and KMART chains.
Graphics from Sears Holdings, Target Corporation and WalMart Stores, Inc.

Such large-size, "discount mart" operations were to radically change the face of retail during the 1960s and '70s. Although Woolco, a subsidiary of New York City-based F.W. Woolworth, frowned upon their new line of super stores being classed as  "discount" outlets, this is, in essence, what they were.