Michigan's Meijer ["Miy-ir"] traces its origins to the Greenville, Michigan store in this photo. It had opened, as the Northside Grocery, in 1934. By 1936, it was known as the Thrift Market.
Photo from http://www.wane.com


Here we see first Thrifty Acres. This store format made its debut, in Grand Rapids, in 1962. Although heralded as the first "superstore" in the USA, this distinction should really be given to Portland, Oregon's Fred Meyer chain, who was operating general merchandise and supermarket combos as early as 1949.
Photo from http://www.wane.com
 

A snapshot of a contemporary Meijer store. After being employed at a Meijer, as well as two "Wally Worlds", I will say that the Wal-Mart stores were somewhat better to work in. Back in 1990-'91, the Meijer chain wouldn't even give its beleaguered "associates" an employee discount. Some corporate-ese ying-yang stated that "Meijer prices are low enough already". I see that this draconian policy has -since- been changed. Must have been all of the competition coming by way of Bentonville.
Photo from Wikipedia / " Mrmiscellanious"