Founded in Chicago during the early years of the last century, Charles Walgreen, Sr.'s chain of drugstores is now the largest in the U.S. The Walgreens at the southern edge of Glencoe carries the products found in most Walgreens stores including cold drinks and staple foods, cleaning supplies, greeting cards and stationery, and over-the-counter medications. The store also has a limited selection of beer and tobacco products. Parking is available in the shared lot that adjoins the business.