In a long collaboration with Roland Oliver (who was his contemporary at Cambridge and visited him in Ghana), he founded the Journal of African History, and
Oliver Cromwell | Oliver Stone | Oliver! | Oliver Goldsmith | Roland | Oliver | Jamie Oliver | Oliver Wendell Holmes, Jr. | Oliver Sacks | Roland Barthes | Oliver Wendell Holmes, Sr. | Oliver Twist | Oliver Wendell Holmes | Oliver Hardy | Stade Roland Garros | Roland Petit | Oliver Reed | Oliver North | Oliver Nelson | Oliver Hazard Perry | Oliver Lake | Roland J. Green | Oliver Heaviside | Roland Emmerich | Oliver O. Howard | Oliver Tambo | Oliver Lodge | Oliver Letwin | Oliver Kahn | Roland Orzabal |