From the booklet (pages 8 and 9):

The St. Lawrence Seaway and Power Project is one of those undertakings [of harmonious collaboration], so imaginative in conception and so vast in scope, that descriptive adjectives must but detract from their grandeur. Yet plain truth is that never before in the history of mankind has a single engineering scheme embraced within a single grand design so many interlocking parts of a continent’s life. It is a venture which not only sets the scene for things yet to come; it consummates, it completes, it crowns the history of four centuries past. It is the final fulfilment of a dream originally formed by men who knew nothing of steamships and hydroelectric power.... But they were men, those early pioneers, who, like the great of all times and countries, refused to be limited by the present or daunted by the unknowns. Few were the technical resources at their command; their vision and their daring it was that more than quadrupled the size of the civilized world. It is only against the background of their vision and their work that the grandeur of the St. Lawrence Seaway and Power Project can be appreciated.