Following Walt Disney's death in December 1966, his older brother and co-founder, Roy O. Disney, took full control of the company. Roy was already the financial brain behind the operation, but he famously postponed his planned retirement to oversee the completion of "Disney World" in Florida, which he insisted on renaming Walt Disney World as a permanent tribute to his brother's vision. After Roy O. Disney passed away in 1971, shortly after the Florida park opened, the leadership transitioned to Donn Tatum (the first non-family CEO) and Card Walker. This era, often called the "interim" or "steady hand" period, focused on maintaining the status quo and opening EPCOT Center. It wasn't until the mid-1980s, under the leadership of Michael Eisner and Frank Wells, that the company entered a modern "renaissance" of rapid expansion and creative revitalization. Roy's son, Roy E. Disney, also remained a powerful figure in the company for decades, eventually leading the "Save Disney" campaigns that influenced future leadership changes, including the appointment of Bob Iger.