From Longman's Cultural Editions series, King Lear , edited by Claire McEachern, includes the play and contextual materials from the era of Shakespeare.
Handsomely produced and affordably priced, the Longman Cultural Editions series presents classic works in provocative and illuminating contexts–cultural, critical, and literary. Each Cultural Edition consists of the complete text of an important literary work, reliably edited, headed by an inviting introduction, and supplemented by helpful annotations; a table of dates to track its composition, publication, and public reception in relation to biographical, cultural, and historical events; and a guide for further inquiry and study.