The letters which form the bulk of the material catalogued here, were written by Sidney Walker over a quarter of a century to several female relations: principally, his mother (who after her husband's death lived at various addresses in London and its suburbs); his mother's sister Maria, who had married William Walker, a solicitor at Thirsk in the North Riding (and probably a brother or cousin of Sidney's father); and his unmarried cousin Margaret, a daughter of Maria Walker. The letters, which are written in lively style, contain remarks on the works of Byron, Galt, Scott, Southey and other contemporary authors; comments on Walker's own publications and activities; examples of his English verse; and news of and enquiries about family members.