1962. Fifth Edition. 478 pages. No dust jacket. Signed by the author. Blue cloth. Author dedication signature. Black and white illustrations throughout. Pages are mostly clean overall, with mild tanning throughout. Small water marks to fore edge of text block, slightly affecting last few pages. Illustrations are bright and clear, with some light tanning and foxing to edges. Thumb-marking present throughout. Boards have slight edge wear with corner bumping. Visible tanning to spine and edges with some crushing to spine ends. Black marks overall. Book is slightly bowed and backward leaning.