[1] Gibson lived in Hopetoun Rd, Toorak, Victoria for much of his life, but toward the end of his career he maintained a residence in Arthur Circle, Forrest in Canberra.
He was made a lieutenant in the Melbourne University Rifles in 1922, and by the time of World War II had risen to the rank of major in the reserves.
He acquired the works of some of Australia's most highly regarded artists, such as Russell Drysdale, Albert Tucker and John Brack.
[6] Other artists well represented in his collection included Noel Counihan, John Passmore, Clifton Pugh, Arnold Shore and Clive Stephen.
[7] His fascination with silver also led him to spend time during a visit to Europe in 1952, learning from the British silversmith Robert Stone how silverware was made.
[1] The NGV was Australia's oldest public gallery, its acquisitions largely funded by the massive but dwindling Felton Bequest.
[12] Gibson was reported to be "always a man of strong opinions", bringing a robust and blunt character to some of the meetings of the Gallery's trustees.
The trustees were concerned that the substantial resources of the institution's rich Felton Bequest were not being applied effectively to ensure the representation of contemporary schools of art in the Gallery's collection.
[13] Seeking to directly support the NGV, Gibson financed the purchase of works by and for the Gallery, as well as making his personal collection available for exhibition.
[7] Gibson played many other roles in the arts, through societies of artists, of collectors, and through boards of which he was a member as a result of his involvement with the Australian Elizabethan Theatre Trust.
[2] He was a foundation member of the National Trust of Australia (Victoria) in 1955, and co-founded the Society of Collectors of Fine Arts.