1968. Revised Edition. 39 pages. Illustrated dust jacket over brown cloth boards. Gilt lettering. Contains colour plates. Clean pages and plates with light tanning and mild foxing throughout. More pronounced to free endpapers and pastedowns. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is bright and clear. Minor wear marks to boards. Clipped jacket. Panels and spine have light edgewear with tears and creases. Moderate sunning to spine. Visible wear marks to spine and panels.