1927. No Edition Remarks. 129 pages. No dust jacket. Blue cloth. Contains black and white in-text illustrations. Two fold-out illustrated diagrams in pocket to rear pastedown. Pages are moderately tanned and foxed throughout. Folded illustrated diagrams are lightly tanned and foxed, with some mild chips to edges and creasing. Previous owner's inscription to front free endpaper. Cracking to hinges with exposed binding, causing boards to be slightly loose. Some pencil marginalia to pages throughout. Text-block is slightly loose from binding. Boards have moderate edge wear with bumping to corners and rubbing to surfaces. Crushing to spine ends with small splits and fraying to cloth. Dark water staining to all surfaces. Mild tanning to spine and edges. Book is slightly bowed and forward leaning. Yellow staining to rear board, with minor red marking overall.