With Dana Scott, 1977. An introduction to modal logic. Oxford: Blackwell. References Ivo Thomas, 1968. In Memoriam: Edward John Lemmon. Notre Dame Journal of Formal Logic, Vol IX(1). Jack Copeland, 2004. Arthur Prior. In the Stanford Encyclopedia of Philosophy. 1930 births 1966 deaths 20th-century British non-fiction writers 20th-century British philosophers 20th-century English mathematicians Alumni of Magdalen College, Oxford British logicians British male non-fiction writers Epistemologists People educated at King Edward VII School, Sheffield Philosophers of language Philosophers of logic Philosophers of mathematics Place of death missing