son, and are carried up Sixth Avenue to Twenty-third Street, and ultimately will be extended to Thirty-third,' for this enterprise is chiefly due to President McAdoo. rapid advance being due to the adoption of a method The great value of the road lies in the fact that it altogether novel and bold.… … It we rhemde the footwalk across the elevated tracks, there are six separate levels for travel shown in the External diameter, 23 feet; internal diameter, 19 feet. Driven by the shield method. Maximum rate of above view of conditions as they will ultimately exist at 83d Street. advance througK mud…
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