During her lifetime, Geraldine was resolutely opposed to the activities of the Snake River Land Company, which was buying land in Jackson Hole on behalf of John D. Rockefeller, Jr., who planned to donate the land for the creation of what would become Grand Teton National Park. Acquisition of the prime Lucas property was a major aim for the company. After Geraldine's death the land was purchased by J.D. Kimmell, with the idea of subdividing and developing the land. He was, however, friends with Harold Fabian of the Snake River Land Company, and in 1944 sold the property to what had become the Jackson Hole Preserve in exchange for rights at Jenny Lake. Fabian and his family moved into the Lucas place in 1946, spending summers there until Harold's death in 1975, under a deal with the Park Service.