In 1953, the north half of the building was demolished, and construction began on the First Security Building (now known as Plaza 121) in its place.
David Eccles, who emigrated to Utah from Scotland in 1863 had a founding interest in Utah International, which was later inherited by Marriner and George Eccles.
Canadian Broadcasting Corporation | Australian Broadcasting Corporation | Oracle Corporation | International Finance Corporation | Chevron Corporation | National Security Agency | Digital Equipment Corporation | News Corporation | Lockheed Corporation | corporation | National Security Council | Organization for Security and Co-operation in Europe | Hearst Corporation | Scholastic Corporation | Northrop Corporation | Munhwa Broadcasting Corporation | United States National Security Council | Gibson Guitar Corporation | CBS Corporation | United Nations Security Council | National Security Advisor | United States Department of Homeland Security | security | Fender Musical Instruments Corporation | ITT Corporation | Sharp Corporation | RAND Corporation | National Security Advisor (United States) | Social Security Administration | NCR Corporation |
However, in 1997, Spencer Eccles, a Utah alumnus and chairman of Utah's biggest bank, First Security Corporation (now part of Wells Fargo), announced that the George S. and Dolores Dore Eccles Foundation would donate $10 million toward the project.
Director: First Security Corporation; Denver Tramway Corporation; trustee, University of Denver.
George S. Eccles (1902–1982), co-founder of First Security Corporation and George S. and Dolores Dore Eccles Foundation