Rogers, O.B.E., Col. H.C.B., The Pageant of Heraldry – An Explanation of its Principles & its Uses To-day, 1957, London: Seeley Service and Co. Limited UL: 494:1.b.95.1 (North Front, Floor 3)
An excellent text for those interesting in designing and drawing. Includes some very clear line drawings of heraldic charges.