Three information cards, bearing cuttings of photographs and captions describing Mr. Wilson Parry's experiments in trephination with obsidian knives, one from "The Lancet", two from "The Medical Press", English 1914 Three information cards 1914
[Information sheets (20)] High pressure coal gasification (Lurgi system) for West Midland Gas Board at Coleshill, England / Woodall-Duckham Ltd. c1964. High pressure coal gasification (Lurgi system) for West Midland Gas Board at Coleshill, England circa 1964
Card with paper cuttings from "The Medical Press" giving information on flint-pointed bow-drill shafts used in trephining, English, 1914-1915 Card with paper cuttings from "The Medical Press" 1914-1915