1970. Third Edition. 522 pages. Illustrated dust jacket over brown illustrated cloth boards. Clean pages with light tanning and mild foxing throughout. Pencil markings to front free endpaper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Lettering is bright and clear. Unclipped jacket. Panels and spine have light edgewear with tears and creases. Visible wear marks to spine and panels.