Hardcover in original printed acetate, as issued. Copiously illustrated with photos, models and plans, including the models and plans for the Toronto City Hall, then in the process of building. Ex library with institutonal stamp on half-title and date stamp on tp verso; book pocket and date due slip at rear; spine label. Front hinge started; tape stains on cloth & endpapers & tape residue on acetate flaps. Text in English & German, translated from the Finnish.