During the next three decades, The Bon-Ton Stores continued to expand. In 1961, M.S.'s son, M. Thomas "Tim", entered the business, representing the fourth generation of Grumbachers. During the 1960s, the company opened new Eyerly's and Bon-Ton stores in several Pennsylvania communities and one in West Virginia. They also started a discount chain, Mailman's, and in 1969, retired the McMeen's name. During the 1970s, as the popularity of shopping centers began to grow, The Bon-Ton opened 11 new stores in Pennsylvania and West Virginia.