A vintage trademark for the Piggly Wiggly chain of stores. At its zenith in 1932, there were two thousand six hundred and sixty. However, hostile takeovers resulted in several locations being divested. Today, Piggly Wiggly is headquartered in Keene, New Hampshire and oversees the operation of six hundred franchised stores in seventeen states.
Graphic from http://www.pigglywiggly.com

Two shots of Piggly Wiggly Store Number One. It may not look like much today, but it singlehandedly revolutionized the food retail industry in the early 20th century.
Photos from Library of Congress