The Geological Association of Canada, 1979.  Special Paper 19.  James Buckland Mawdsley Memorial Volume.  ISBN 0-919216-13-7.  Hard cover, 292 pages.  Very good plus; gold cloth with black lettering on front and spine; very light edge wear; binding tight with headbands.  Prior owner’s name and location on front and rear end papers; remainder of interior clean and unmarked.  Illustrated with black & white photos, drawings, maps.  ‘Papers presented at a symposium organized by the International Committee on the History of Geological Sciences held in Montreal, August 23-24, 1972, and additional papers.’ (from title page)