A group of seven volumes, comprising : CHRISTIE, Agatha (1890-1976). Hercule Poirot’s Christmas . London: for The Crime Club by Collins, 1939.First edition . Octavo. Original red cloth, spine lettered in black (spine ends a little sunned, dampstain to top edge of upper board, edges a little spotted); original dust-jacket priced 7s. 6d. (spine sunned, two small chips to head of spine with loss to one letter, a few nicks, stain to top edge of upper panel). – Poirot and the Regatta Mystery . London: Vallancey Press Limited, 1943.First edition: an excellent copy . Octavo. Original pictorial stapled card boards (extremities slightly rubbed). – Third Girl . London: for The Crime Club by Collins, 1966.First edition, signed by the author . Octavo. (A few marginal marks.) Original red boards, spine lettered in gilt (small stain on fore-edge); original pictorial dust-jacket (price-clipped). – The Man in the Brown Suit . London: John Lane The Bodley Head Limited, 1924. First edition of Christie's fourth book . Octavo. 1 leaf of ads at end (minor marks, numerous corners creased). Original grey-brown cloth (lacking the dust-jacket as usual, spine a little darkened, endpapers browned, textblock split between pp.192-193, extremities faintly rubbed, a few stains). – The Witness for the Prosecution and other stories . New York: Dodd, Mead & Company, [1948].First edition . Octavo. Original grey boards, lettered on spine and with publisher’s seal in red on upper cover; original pictorial dust-jacket (spine ends lightly frayed, a few short closed marginal tears, extremities faintly rubbed). – Black Coffee. A Play in Three Acts . London: Alfred Ashley and Son, 1934.First edition, a very good copy of Christie’s first play. Octavo. (Some stains at lower margin, a few corners dog-eared). Original orange card wrappers printed in black, ‘Baker’s Plays’ label to upper cover and ‘Royalty Notice’ label on title verso (light soiling, small chip to one corner). CHRISTIE, Agatha (1890-1976) and E. Phillips OPPENHEIM (1866-1946). The Under Dog [And:] Blackman’s Wood . London: The Readers Library, [1929]. First edition . Small octavo. Original burgundy cloth, spine and upper board lettered and decorated in gilt; original pictorial dust-jacket (one short closed tear, faint rubbing, a few tiny spots).