New York: The Continental Iron Works, 1906. Pamphlet. 30p., profuse photoillustrations and diagrams with text and statistics, printed in black and red every leaf on high-gloss alkaline heavy paperstock, softbound, a pamplet in 11.5x9 inch self-wraps. Disbound (once sewn, only stab-holes remain) and missing a leaf: pagination is consistent except for leaf 3/4 which is absent. This leaf's terminal opposite, 27/28, is present & accounted for, so 3/4 may have been a singleton purposely omitted. Whatever the case the item in hand is presentable and its pages are in remarkably bright condition. Spinefold slightly abraded, leaves nest well though no longer fastened, mild cover-crimps, a nice if flawed copy.