1929. First Edition. 210 pages. No dust jacket. Green cloth. Foreword by Ray Palmer Baker. Pages are moderately tanned with noticeable foxing throughout. Cracks to hinges, exposing netting. Slight crinkling to paper at gutters, however binding remains firm. Ex-libris plate to front pastedown. Pencil inscription to front free endpaper. Thumb-marking present throughout. Water marks to top text block edge. Text is not affected. Boards have visible edge wear with corner bumping. Moderate tanning to spine and edges with some crushing to spine ends. Fraying with small area of loss to spine edges. Some brown marks overall.