First edition. Royal 8vo. 2 vols. (a matched set) pp. xxx, 349 & xiii, 338; photogravure frontispiece to each vol., b&w photo. illusts. inc. some double-page, illusts. to text, 3 large folding maps to rear pocket of vol. II; minor spotting, but generally clean and very good in the original blue cloth, silver vignettes to upper boards, lettered in gilt to upper covers and spines, rather faded to spines (as often), vignettes a little marked. A presentation copy from the author, inscribed by Mawson to front blank of volume 1 "To Lord Denman in warm appreciation of great help afforded the expedition from Douglas Mawson 15th March 1916".