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LEGEND
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Prom "A Report on the Street Traffic Control Problem of the City of Boston" Prepared under the Direction of the Mayor'* Street Traffic Advisory Board by Albert Russel Erskine Bureau of Harvard Uaiveisity, 1928.
Time Zones on Seventeen Highway Routes to and from Corner Parle and Trennont Streets in Boston During the Morning and Evening Rush Hours from June to September 1927.
While most of the traffic maps give the amount of traffic, this map gives the length of time it takes to get into Boston from outlying districts.
GRAPHIC PRESENTATION
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